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Author SHA1 Message Date
Egor Savkin
3a45137eaf urukul: clarify sync is not available for 1-EEM mode 
Signed-off-by: Egor Savkin <es@m-labs.hk>
 2025-03-25 15:34:36 +08:00
architeuthis
b4168605c3 1008: init 2025-03-25 15:18:03 +08:00
architeuthis
843e2d1544 4410-4412/suservo: add clk_sel details 2025-03-09 20:49:22 +01:00
architeuthis
77669dfe46 4410-4412: add 'Model comparison', fix double EEM section 2025-02-28 16:52:32 +01:00
architeuthis
5570a2dd29 5108: fix typo 2025-02-28 16:51:54 +01:00
architeuthis
4fbdef8a9b 4410-4412: fixes 2025-02-28 16:51:54 +01:00
architeuthis
8ddce492ed 5108: bump revision number 2025-02-28 16:51:54 +01:00
architeuthis
3a4404ce16 4410-4412: bump revision number 2025-02-28 16:51:54 +01:00
architeuthis
ad12e00ef7 4410-4412: LED section 2025-02-28 16:51:54 +01:00
architeuthis
8ccb667770 5108: sysdesc section and SUServo 2025-02-28 16:51:54 +01:00
architeuthis
eabc25413b 4410-4412: sysdesc section and SUServo 2025-02-28 16:51:54 +01:00
architeuthis
703f2ce2b6 suservo: shared file 2025-02-28 16:51:54 +01:00
architeuthis
76127d52a1 5108: formatting 2025-02-28 16:51:54 +01:00
architeuthis
b477181de3 4410-4412: formatting 2025-02-28 16:51:54 +01:00
6 changed files with 546 additions and 399 deletions
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76
1008.tex Normal file
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@ -0,0 +1,76 @@
\input{preamble.tex}
\graphicspath{{images/1008}{images}}
\title{1008 VHDCI Carrier}
\author{M-Labs Limited}
\date{January 2025}
\revision{Revision 1}
\companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}}
\begin{document}
\maketitle
\section{Features}
\begin{itemize}
\item{8 channels}
\item{8 internal EEM connectors}
\item{2 external VHDCI connectors}
\end{itemize}
\section{Applications}
\begin{itemize}
\item{Break out VHDCI to extension boards}
\item{Carry signals over VHDCI between crates}
\item{Low-cost alternative to DRTIO}
\item{Adapter for certain KC705 ARTIQ systems}
\end{itemize}
\section{General Description}
The 1008 VHDCI Carrier is a 4hp EEM module, part of the ARTIQ/Sinara family. It is a passive adapter card which converts VHDCI connections to or from EEM connections.
The 1008 VHDCI Carrier is bidirectional; it can be driven by a core device carrier board, or can drive other cards.
A pair of VHDCI Carrier cards can be paired with VHDCI SCSI-3 cables to carry EEM signals over short distances between crates. Depending on the application, this can serve as a simple, low-cost, low-latency alternative to multiple core devices and ARTIQ DRTIO.
% Switch to next column
\vfill\break
%\begin{figure}[h]
% \centering
% \scalebox{1.15}{
% \begin{circuitikz}[european, every label/.append style={align=center}]
% \begin{scope}[]
% % if applicable
% \end{scope}
% \end{circuitikz}
% }
% \caption{Simplified Block Diagram}
%\end{figure}
\begin{figure}[hbt!]
\centering
\includegraphics[height=2.5in]{photo1008.jpg}
\caption{VHDCI Carrier card}
\includegraphics[height=2.5in, angle=90]{fp1008.pdf}
\caption{VHDCI Carrier front panel}
\end{figure}
% For wide tables, a single column layout is better. It can be switched
% page-by-page.
\onecolumn
\sourcesection{1008 VHDCI Carrier}{https://github.com/sinara-hw/VHDCI_Carrier}
\section{Power}
Power supply is required when driving EEM cards. 12V should be supplied through barrel jacks (2.50 mm ID, 5.50 mm OD) either in front panel or at back of card.
\ordersection{1008 VHDCI Carrier}
\finalfootnote
\end{document}

633
4410-4412.tex
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@ -3,8 +3,8 @@
\title{4410/4412 DDS Urukul} \title{4410/4412 DDS Urukul}
\author{M-Labs Limited} \author{M-Labs Limited}
\date{January 2022} \date{January 2025}
\revision{Revision 2} \revision{Revision 3}
\companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}} \companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}}
\begin{document} \begin{document}
@ -12,29 +12,29 @@
\section{Features} \section{Features}
\begin{itemize} \begin{itemize}
\item{4-channel 1GS/s DDS} \item{4-channel 1GS/s DDS}
\item{Output frequency from \textless 1 to \textgreater 400 MHz} \item{Output frequency from \textless 1 to \textgreater 400 MHz}
\item{Sub-Hz frequency resolution} \item{Sub-Hz frequency resolution}
\item{Controlled phase steps} \item{Controlled phase steps}
\item{Accurate output amplitude control} \item{Accurate output amplitude control}
\end{itemize} \end{itemize}
\section{Applications} \section{Applications}
\begin{itemize} \begin{itemize}
\item{Dynamic low-noise RF source} \item{Dynamic low-noise RF source}
\item{Driving RF electrodes in ion traps} \item{Driving RF electrodes in ion traps}
\item{Driving acousto-optic modulators} \item{Driving acousto-optic modulators}
\item{Form a laser intensity servo with 5108 Sampler} \item{Form a laser intensity servo with 5108 Sampler}
\end{itemize} \end{itemize}
\section{General Description} \section{General Description}
The 4410/4412 DDS Urukul card is a 4hp EEM module, part of the ARTIQ/Sinara family. It adds frequency generation capabilities to carrier cards such as 1124 Kasli and 1125 Kasli-SoC. The 4410/4412 DDS Urukul card is a 4hp EEM module, part of the ARTIQ/Sinara family. It adds frequency generation capabilities to carrier cards such as 1124 Kasli and 1125 Kasli-SoC. It can also be combined with 5018 ADC Sampler to form the ARTIQ SU-Servo configuration.
It provides 4 channels of DDS (direct digital synthesis) at 1GS/s. Output frequencies from \textless 1 to \textgreater 400 MHz are supported. The nominal maximum output power of each channel is 10dBm. Each channel can be attenuated from 0 to -31.5 dB by a digital attenuator. RF switches (1ns temporal resolution) on each channel provide 70 dB isolation. It provides 4 channels of DDS (direct digital synthesis) at 1GS/s. Output frequencies from \textless 1 to \textgreater 400 MHz are supported. The nominal maximum output power of each channel is 10dBm. Each channel can be attenuated from 0 to -31.5 dB by a digital attenuator. RF switches (1ns temporal resolution) on each channel provide 70 dB isolation.
4410 DDS Urukul features AD9910 chips, while 4412 DDS Urukul features AD9912 chips. AD9912 is capable of higher frequency precision (~8 \textmu Hz) than the AD9910 (~0.25 Hz). The ARTIQ SU-Servo configuration is only available for AD9910. 4410 DDS Urukul features AD9910 chips, while 4412 DDS Urukul features AD9912 chips. These offer slightly different features and specifications. See below for a comparison between the two.
% Switch to next column % Switch to next column
\vfill\break \vfill\break
@ -280,117 +280,167 @@ It provides 4 channels of DDS (direct digital synthesis) at 1GS/s. Output freque
\sourcesection{4410/4412 DDS Urukul}{https://github.com/sinara-hw/Urukul/} \sourcesection{4410/4412 DDS Urukul}{https://github.com/sinara-hw/Urukul/}
\section{Model comparison}
4410 DDS Urukul uses AD9910\repeatfootnote{ad9910} chips, whereas 4412 DDS Urukul uses AD9912\repeatfootnote{ad9912} chips. In general, 4412/AD9912 is capable of much higher frequency resolution, at the cost of more detailed control features provided by 4410/AD9910, such as phase synchronization, digital ramp modulation or DRG, and digital amplitude control. See individual DDS IC datasheets for feature details, especially of AD9910, or ARTIQ code section below for examples of more complex experiments only possible with AD9910. The SUServo configuration is only available for AD9910.
\begin{table}[h]
\centering
\begin{threeparttable}
\caption{Specification Differences}
\begin{tabularx}{0.8\textwidth}{l | c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{AD9910} & \textbf{AD9912} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
Resolution & & & & \\
\hspace{3mm} Frequency\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{urukul_wiki} & 0.25 & & Hz & \\
& & 8 & μHz & \\
\hspace{3mm} Phase offset\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{ad9912} & 16 & 14 & bits & \\
\hspace{3mm} DAC full scale current\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{ad9912} & 8 & 10 & bits & \\
\hspace{3mm} Digital amplitude\repeatfootnote{ad9910} & 14 & & bits & \\
\hline
Power consumption\repeatfootnote{urukul_wiki} & 7 & 6.5 & W & 4x 400 MHz, 10.5 dBm, 52°C \\
\hline
ARTIQ SUServo available & Yes & No & & \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
\section{Electrical Specifications} \section{Electrical Specifications}
Specifications of parameters are based on the datasheets of the DDS IC Specifications of parameters are based on the datasheets of the DDS IC
(AD9910\footnote{\label{ad9910}\url{https://www.analog.com/media/en/technical-documentation/data-sheets/AD9910.pdf}}, (AD9910\footnote{\label{ad9910}\url{https://www.analog.com/media/en/technical-documentation/data-sheets/AD9910.pdf}} ,
AD9912\footnote{\label{ad9912}\url{https://www.analog.com/media/en/technical-documentation/data-sheets/AD9912.pdf}}), AD9912AD9912\footnote{\label{ad9912}\url{https://www.analog.com/media/en/technical-documentation/data-sheets/AD9912.pdf}}),
clock buffer IC (Si53312\footnote{\label{clock_buffer}\url{https://www.skyworksinc.com/-/media/SkyWorks/SL/documents/public/data-sheets/Si5331x_datasheet.pdf}}), clock buffer IC (Si53312\footnote{\label{clock_buffer}\url{https://www.skyworksinc.com/-/media/SkyWorks/SL/documents/public/data-sheets/Si5331x_datasheet.pdf}}), digital attenuator IC (HMC542BLP4E\footnote{\label{attenuator}\url{https://www.analog.com/media/en/technical-documentation/data-sheets/hmc542b.pdf}}), Sinara project information\footnote{\label{urukul_wiki}\url{https://github.com/sinara-hw/Urukul/wiki\#details-specification-and-typical-performance-data}} and corresponding test results\footnote{\label{sinara354}\url{https://github.com/sinara-hw/sinara/issues/354\#issuecomment-352859041}}.
digital attenuator IC (HMC542BLP4E\footnote{\label{attenuator}\url{https://www.analog.com/media/en/technical-documentation/data-sheets/hmc542b.pdf}}), Sinara project information\footnote{\label{urukul_wiki}\url{https://github.com/sinara-hw/Urukul/wiki\#details-specification-and-typical-performance-data}}
and corresponding test results\footnote{\label{sinara354}\url{https://github.com/sinara-hw/sinara/issues/354\#issuecomment-352859041}}.
\begin{table}[h]
\centering
\begin{threeparttable}
\caption{Recommended Operating Conditions}
\begin{tabularx}{0.9\textwidth}{l | c c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
Clock input & & & & &\\
\hspace{3mm} Input frequency\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{ad9912} & 10 & & 1000 & MHz & PLL disabled \\
& 3.2 & & 60 & MHz & AD9910, PLL enabled, no clock division \\
& 12.8 & & 240 & MHz & AD9910, PLL enabled, 4x clock division \\
& 11 & & 200 & MHz & AD9912, PLL enabled, no clock division \\
& 44 & & 800 & MHz & AD9912, PLL enabled, 4x clock division \\
\hspace{3mm} Nominal input power\repeatfootnote{clock_buffer} & & 10 & & dBm & \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
\begin{table}[h] \begin{table}[hbt!]
\centering \centering
\begin{threeparttable} \begin{threeparttable}
\caption{RF Output Specifications} \caption{Recommended Operating Conditions}
\begin{tabularx}{0.9\textwidth}{l | c c c | c | X} \begin{tabularx}{0.9\textwidth}{l | c c c | c | X}
\thickhline \thickhline
\textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} & \textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\ \textbf{Unit} & \textbf{Conditions} \\
\hline \hline
Low frequency power\repeatfootnote{sinara354} & & & -20 & dBm & 100 kHz output \\ Clock input & & & & & \\
& & & 10 & dBm & 1 MHz output \\ \hspace{3mm} Input frequency\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{ad9912} & 10 & & 1000 & MHz & PLL disabled \\
\hline & 3.2 & & 60 & MHz & AD9910, PLL enabled, no clock division \\
Frequency\repeatfootnote{urukul_wiki} & 1 & & 400 & MHz & \\ & 12.8 & & 240 & MHz & AD9910, PLL enabled, 4x clock division \\
\hline & 11 & & 200 & MHz & AD9912, PLL enabled, no clock division \\
Digital attenuation\repeatfootnote{attenuator} & -31.5 & & 0 & dB & \\ & 44 & & 800 & MHz & AD9912, PLL enabled, 4x clock division \\
\hline \thickhline
Resolution & & & & & \\ \end{tabularx}
\hspace{3mm} Frequency\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{urukul_wiki} & & 0.25 & & Hz & AD9910 \\ \end{threeparttable}
& & 8 & & $\mu$Hz & AD9912 \\ \end{table}
\hspace{3mm} Phase offset\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{ad9912} & & 16/14 & & bits & AD9910/AD9912 respectively \\
\hspace{3mm} Digital amplitude\repeatfootnote{ad9910} & & 14 & & bits & AD9910 \\
\hspace{3mm} DAC full scale current\repeatfootnote{ad9910}\textsuperscript{,}\repeatfootnote{ad9912} & & 8/10 & & bits & AD9910/AD9912 respectively \\
\hspace{3mm} Temporal (I/O Update)\repeatfootnote{urukul_wiki} & & 4 & & ns & \\
\hspace{3mm} Digital attenuation\repeatfootnote{attenuator} & & 0.5 & & dB & \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
The tabulated performance characteristics are produced using the following setup unless otherwise noted:
\begin{itemize}
\item 100 MHz input clock into SMA, 10 dBm
\item Input clock divided by 4
\item PLL with x40 multiplier
\item Output frequency at 80 MHz or 81 MHz
\end{itemize}
\begin{table}[h]
\begin{threeparttable}
\caption{Electrical Characteristics}
\begin{tabularx}{\textwidth}{l | c | c c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{Symbol} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
Digital attenuator glitch duration\repeatfootnote{sinara354} & $t_s$ & & 100 & & ns & \\
\hline
RF switch\repeatfootnote{sinara354} & & & & & &\\
\hspace{3mm} Rise to 90\% & $t_{on}$ & & 100 & & ns & \\
\hspace{3mm} Isolation & & & 70 & & dB & \\
\hspace{3mm} Turn-on chirp & $\gamma$ & & & 0.1 & deg/s & Excluding the first $\mu$s\\
\hline
Crosstalk\repeatfootnote{sinara354} & & & -84 & & dB & Victim RF switch opened \\
& & & -110 & & dB & Victim RF switch closed \\
\hline
Cross-channel-intermodulation\repeatfootnote{sinara354} & & & -90 & & dB & \\
\hline
Phase noise\repeatfootnote{sinara354} & $\mathcal{L}(f)$ & & -85 & & dBc/Hz & 0.1 Hz \\
& & & -95 & & dBc/Hz & 1 Hz \\
& & & -107 & & dBc/Hz & 10 Hz \\
& & & -116 & & dBc/Hz & 100 Hz \\
& & & -126 & & dBc/Hz & 1 kHz \\
& & & -133 & & dBc/Hz & 10 kHz \\
& & & -135 & & dBc/Hz & 100 kHz \\
& & & -128 & & dBc/Hz & 1 MHz \\
& & & -149 & & dBc/Hz & 10 MHz \\
\hline
Second-order harmonics\repeatfootnote{sinara354} & & & -40 & & dB & 6 dBm output \\
& & & -34 & & dB & 10.5 dBm output \\
\hline
Third-order harmonics\repeatfootnote{sinara354} & & & -54 & & dB & 6 dBm output \\
& & & -28 & & dB & 10.5 dBm output \\
\hline
Power consumption (AD9910)\repeatfootnote{urukul_wiki} & $P$ & & 7 & & W & 4x 400 MHz, 10.5 dBm, 52\degree C\\
Power consumption (AD9912)\repeatfootnote{urukul_wiki} & $P$ & & 6.5 & & W & 4x 400 MHz, 10.5 dBm, 52\degree C\\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
\newpage \newpage
\begin{table}[hbt!]
\centering
\begin{threeparttable}
\caption{Recommended Operating Conditions, cont.}
\begin{tabularx}{0.9\textwidth}{l | c c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
\hspace{3mm} Nominal input power\repeatfootnote{clock_buffer} & & 10 & & dBm & \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
\begin{table}[hbt!]
\centering
\begin{threeparttable}
\caption{RF Output Specifications}
\begin{tabularx}{0.9\textwidth}{l | c c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
Low frequency power\repeatfootnote{sinara354} & & & -20 & dBm & 100 kHz output \\
& & & 10 & dBm & 1 MHz output \\
\hline
Frequency\repeatfootnote{urukul_wiki} & 1 & & 400 & MHz & \\
\hline
Digital attenuation\repeatfootnote{attenuator} & -31.5 & & 0 & dB & \\
\hline
Resolution & & & & & \\
\hspace{3mm} Temporal (I/O Update)\repeatfootnote{urukul_wiki} & & 4 & & ns & \\
\hspace{3mm} Digital attenuation\repeatfootnote{attenuator} & & 0.5 & & dB & \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
\begin{table}[hbt!]
\centering
\begin{threeparttable}
\caption{Electrical Characteristics}
\begin{tabularx}{0.9\textwidth}{l | c c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
Digital attenuator glitch duration\repeatfootnote{sinara354} & & 100 & & ns & \\
\hline
RF switch\repeatfootnote{sinara354} & & & & &\\
\hspace{3mm} Rise to 90\% & & 100 & & ns & \\
\hspace{3mm} Isolation & & 70 & & dB & \\
\hspace{3mm} Turn-on chirp & & & 0.1 & deg/s & Excluding the first $\mu$s\\
\hline
Crosstalk\repeatfootnote{sinara354} & & -84 & & dB & Victim RF switch opened \\
& & -110 & & dB & Victim RF switch closed \\
\hline
Cross-channel-intermodulation\repeatfootnote{sinara354} & & -90 & & dB & \\
\hline
Phase noise\repeatfootnote{sinara354} & & -85 & & dBc/Hz & 0.1 Hz \\
& & -95 & & dBc/Hz & 1 Hz \\
& & -107 & & dBc/Hz & 10 Hz \\
& & -116 & & dBc/Hz & 100 Hz \\
& & -126 & & dBc/Hz & 1 kHz \\
& & -133 & & dBc/Hz & 10 kHz \\
& & -135 & & dBc/Hz & 100 kHz \\
& & -128 & & dBc/Hz & 1 MHz \\
& & -149 & & dBc/Hz & 10 MHz \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
\newpage
\begin{table}[hbt!]
\centering
\begin{threeparttable}
\caption{Electrical Characteristics, cont.}
\begin{tabularx}{0.9\textwidth}{l | c c c | c | X}
\thickhline
\textbf{Parameter} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
\textbf{Unit} & \textbf{Conditions} \\
\hline
Second-order harmonics\repeatfootnote{sinara354} & & -40 & & dB & 6 dBm output \\
& & -34 & & dB & 10.5 dBm output \\
\hline
Third-order harmonics\repeatfootnote{sinara354} & & -54 & & dB & 6 dBm output \\
& & -28 & & dB & 10.5 dBm output \\
\thickhline
\end{tabularx}
\end{threeparttable}
\end{table}
The tabulated performance characteristics above were produced using the following setup unless otherwise noted:
\begin{itemize}
\item 100 MHz input clock into SMA, 10 dBm
\item Input clock divided by 4
\item PLL with x40 multiplier
\item Output frequency at 80 MHz or 81 MHz
\end{itemize}
Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\footnote{\label{urukul29}\url{https://github.com/sinara-hw/Urukul/issues/29}}. An external 125 MHz clock signal was supplied. Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\footnote{\label{urukul29}\url{https://github.com/sinara-hw/Urukul/issues/29}}. An external 125 MHz clock signal was supplied.
\newcommand{\ts}{\textsuperscript} \newcommand{\ts}{\textsuperscript}
@ -432,6 +482,8 @@ Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\foot
\end{threeparttable} \end{threeparttable}
\end{table} \end{table}
\newpage
\begin{table}[hbt!] \begin{table}[hbt!]
\begin{threeparttable} \begin{threeparttable}
\caption{Harmonic content with 10.0 dB digital attenuation} \caption{Harmonic content with 10.0 dB digital attenuation}
@ -468,9 +520,7 @@ Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\foot
\end{threeparttable} \end{threeparttable}
\end{table} \end{table}
\newpage \begin{table}[hbt!]
\begin{table}[h]
\begin{threeparttable} \begin{threeparttable}
\caption{Harmonic content with 20.0 dB digital attenuation} \caption{Harmonic content with 20.0 dB digital attenuation}
\begin{tabularx}{\textwidth}{| c | Y | Y | Y | Y | Y | Y | Y | Y | Y |} \begin{tabularx}{\textwidth}{| c | Y | Y | Y | Y | Y | Y | Y | Y | Y |}
@ -506,6 +556,8 @@ Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\foot
\end{threeparttable} \end{threeparttable}
\end{table} \end{table}
\newpage
\begin{table}[hbt!] \begin{table}[hbt!]
\begin{threeparttable} \begin{threeparttable}
\caption{Harmonic content with 31.5 dB digital attenuation} \caption{Harmonic content with 31.5 dB digital attenuation}
@ -542,9 +594,7 @@ Harmonic content of the DDS signals from 4410 DDS Urukul is tabulated below\foot
\end{threeparttable} \end{threeparttable}
\end{table} \end{table}
\newpage The RMS voltage of a 4410 DDS Urukul channel at different amplitude scale factors is measured below. The DDS channel is directly connected to an oscilloscope with a 50\textOmega$\sim$termination. The reported values are obtained from the oscilloscope.
The RMS voltage of a 4410 DDS Urukul channel at different amplitude scale factors is measured below. The DDS channel is directly connected to an oscilloscope with a 50\textOmega~termination. The reported values are obtained from the oscilloscope.
\begin{multicols}{2} \begin{multicols}{2}
\begin{figure}[H] \begin{figure}[H]
@ -663,6 +713,8 @@ The RMS voltage of a 4410 DDS Urukul channel at different amplitude scale factor
\end{multicols} \end{multicols}
\newpage
The ideal RMS voltage is described by the linear function $V_\mathrm{rms,ideal}(\mathrm{ASF})=\frac{V_\mathrm{rms}(0.1)}{0.1}*\mathrm{ASF}$. The ideal RMS voltage is described by the linear function $V_\mathrm{rms,ideal}(\mathrm{ASF})=\frac{V_\mathrm{rms}(0.1)}{0.1}*\mathrm{ASF}$.
The measured RMS voltage divided by the full scale ideal RMS voltage (i.e. $V_\mathrm{rms,ideal}(1)$) is shown below. The measured RMS voltage divided by the full scale ideal RMS voltage (i.e. $V_\mathrm{rms,ideal}(1)$) is shown below.
@ -796,91 +848,161 @@ The measured RMS voltage divided by the full scale ideal RMS voltage (i.e. $V_\m
\caption{Attenuator step from 31 to 32 digital\\(major carry glitch)\repeatfootnote{sinara354}} \caption{Attenuator step from 31 to 32 digital\\(major carry glitch)\repeatfootnote{sinara354}}
\end{figure} \end{figure}
\section{Front panel LEDs}
4410/4412 Urukul features a number of indicator LEDs in the front panel. Each of four channel SMA connectors is accompanied by a green LED, used to indicate that RF output is enabled, and a red LED, which activates to indicate a DDS synchronization/PLL issue. Note that when bypassing PLL in ARTIQ (see below) LED may stay on.
Two additional LEDs indicate power good (green) and overtemperature (red).
\newpage \newpage
\section{Configuring Operation Mode} \section{Configuring Operation Mode}
Mode of operation is specified by a DIP switch. The DIP switch can be found at the top right corner of the card. The following table summarizes the required setting for each mode.
\ding{51} indicates ON, while \ding{53} indicates OFF.
\begin{multicols}{2} Mode of operation is specified by a DIP switch. The DIP switch can be found at the top right corner of the card. The following table summarizes the required setting for each mode.
\ding{51} indicates ON, while \ding{53} indicates OFF.
\begin{center} \begin{multicols}{2}
\captionof{table}{DIP switch configurations}
\begin{tabular}{|l|cccc|}
\hline
\multicolumn{1}{|c|}{\multirow{2}{*}{Mode}} & \multicolumn{4}{c|}{DIP Switch} \\ \cline{2-5}
\multicolumn{1}{|c|}{} & \multicolumn{1}{c|}{1} & \multicolumn{1}{c|}{2} & \multicolumn{1}{c|}{3} & 4 \\ \hline
Default & \multicolumn{1}{c|}{\ding{53}} & \multicolumn{1}{c|}{\ding{53}} & \multicolumn{1}{c|}{\ding{53}} & \ding{53} \\ \hline
SU-Servo & \multicolumn{1}{c|}{\ding{51}} & \multicolumn{1}{c|}{\ding{51}} & \multicolumn{1}{c|}{\ding{53}} & \ding{53} \\ \hline
\end{tabular}
\end{center}
\columnbreak \begin{center}
\captionof{table}{DIP switch configurations}
\begin{tabular}{|l|cccc|}
\hline
\multicolumn{1}{|c|}{\multirow{2}{*}{Mode}} & \multicolumn{4}{c|}{DIP Switch} \\ \cline{2-5}
\multicolumn{1}{|c|}{} & \multicolumn{1}{c|}{1} & \multicolumn{1}{c|}{2} & \multicolumn{1}{c|}{3} & 4 \\ \hline
Default & \multicolumn{1}{c|}{\ding{53}} & \multicolumn{1}{c|}{\ding{53}} & \multicolumn{1}{c|}{\ding{53}} & \ding{53} \\ \hline
SU-Servo & \multicolumn{1}{c|}{\ding{51}} & \multicolumn{1}{c|}{\ding{51}} & \multicolumn{1}{c|}{\ding{53}} & \ding{53} \\ \hline
\end{tabular}
\end{center}
\begin{center} \columnbreak
\centering
\includegraphics[height=1.5in]{urukul_dip_switch.jpg}
\captionof{figure}{Position of DIP switch}
\end{center}
\end{multicols} \begin{center}
\centering
\includegraphics[height=1.5in]{urukul_dip_switch.jpg}
\captionof{figure}{Position of DIP switch}
\end{center}
\end{multicols}
\section{Urukul Single-/Double-EEM Modes} \section{Urukul Single-/Double-EEM Modes}
4410/4412 DDS Urukul cards can operate with either a single or double EEM connections. When only EEM0 is connected, the card will act in single-EEM mode; when both EEM0 and EEM1 are connected, the card will act in double-EEM mode. 2-EEM mode when both EEM0 \& EEM1 are connected. Double-EEM mode provides these additional features in comparison to single-EEM mode: 4410/4412 DDS Urukul cards can operate with either a single or double EEM connections. When only EEM0 is connected, the card will act in single-EEM mode; when both EEM0 and EEM1 are connected, the card will act in double-EEM mode.
\begin{itemize}
\item \textbf{1 ns temporal resolution RF switches} \\
Without EEM1, the only way to access the switches is through the CPLD, using SPI. \\
With EEM1, RF switches can be controlled as a TTL output through the LVDS transceiver. 1 ns temporal resolution can then be achieved using the ARTIQ RTIO system.
\item \textbf{SU-Servo (4410 DDS Urukul feature)} \\ Double-EEM mode additionally provides 1 ns temporal resolution RF switches and phase synchronization feature. Without EEM1, the only way to access the switches is through the CPLD, using SPI. With EEM1, RF switches can be controlled as a TTL output through the LVDS transceiver. 1 ns temporal resolution can then be achieved using the ARTIQ RTIO system. Double-EEM mode is also recommended for the SUServo configuration.
SU-Servo requires both EEM0 \& EEM1 to allow the control of multiple DDS channels simultaneously using the QSPI interface.
\end{itemize} \sysdescsection
4410/4412 Urukul should be entered in the peripherals list of the corresponding core device in the following format:
\begin{tcolorbox}[colback=white]
\begin{minted}{json}
{
"type": "urukul",
"dds": "ad9910", // or "ad9912", as appropriate
"ports": [0, 1], // second port is optional
"synchronization": true, // or false, for AD9910 only
"clk_sel": 2, // select 0 to 2 for clock source
"pll_en": 0 // PLL bypass, for higher external frequencies
"refclk": 125e6, // for external clock signal
}
\end{minted}
\end{tcolorbox}
Replace 0 and 1 with the EEM port numbers used on the core device. Any ports can be used. For single-EEM mode, simply specify only one port. The \texttt{synchronization} field is boolean, false by default, and only applies to AD9910. In the \texttt{clk\_sel} field, \texttt{0} represents the internal 100 MHz oscillator, \texttt{1} represents SMA input, and \texttt{2} represents MMCX input. The \texttt{pll\_en} field may be specified \texttt{0} or \texttt{1} and is \texttt{1} by default.
Note that the SUServo configuration requires a different system description entry. See SUServo section below.
\newpage \newpage
\codesection{4410/4412 DDS Urukul} \codesection{4410/4412 DDS Urukul}
\subsection{10 MHz sinusoidal wave} For details of AD9910 capabilities, operation modes, profiles, signals, etc., see also the corresponding datasheet, e.g. \url{https://www.analog.com/media/en/technical-documentation/data-sheets/AD9910.pdf}.
Generates a 10MHz sinusoid from RF0 with full scale amplitude, attenuated by 6 dB. Both the CPLD and the DDS channels should be initialized. By default, AD9910 single-tone profiles are programmed to profile 7.
\inputcolorboxminted{firstline=11,lastline=18}{examples/dds.py} \subsection{10 MHz sinusoidal wave}
If the synchronization feature of AD9910 is enabled, RF signal across different channels of the same Urukul can be synchronized. For example, phase-coherent RF signal can be produced on both channel 0 and channel 1 after configuring an appropriate phase mode. Generates a 10MHz sinusoid from RF0 with full scale amplitude, attenuated by 6 dB. Both the CPLD and the DDS channels should be initialized. By default, AD9910 single-tone profiles are programmed to profile 7.
\inputcolorboxminted{firstline=28,lastline=43}{examples/dds.py} \inputcolorboxminted{firstline=11,lastline=18}{examples/dds.py}
Note that the phase difference between the 2 channels might not be exactly 0.25 turns, but it is a constant. It can be negated by adjusting the \texttt{phase} parameter. If the synchronization feature of AD9910 is enabled, RF signal across different channels of the same Urukul can be synchronized. For example, phase-coherent RF signal can be produced on both channel 0 and channel 1 after configuring an appropriate phase mode.
\inputcolorboxminted{firstline=28,lastline=43}{examples/dds.py}
Note that the phase difference between the 2 channels might not be exactly 0.25 turns, but it is a constant. It can be negated by adjusting the \texttt{phase} parameter.
\newpage \newpage
\subsection{Periodic RF pulse (AD9910 Only)}
This example demonstrates that the RF signal can be modulated by amplitude using the RAM modulation feature of the AD9910. By default, RAM profiles are programmed to profile 0.
\inputcolorboxminted{firstline=53,lastline=91}{examples/dds.py} \subsection{Periodic RF pulse (AD9910 Only)}
The generated RF output of the above example consists of the following features in sequence: This example demonstrates that the RF signal can be modulated by amplitude using the RAM modulation feature of the AD9910. By default, RAM profiles are programmed to profile 0.
\begin{enumerate}
\item A 5 MHz RF pulse for 2 microseconds.
\item No signal for 1 microseconds.
\item A 5 MHz RF pulse for 1 microseconds.
\item No signal for 3 microseconds.
\item Go back to item 1.
\end{enumerate}
The expected waveform is plotted on the following figure. Note that phase of the RF pulses may drift gradually.
Urukul was operated with a 50$\Omega$ termination to produce the waveform.
\begin{tikzpicture}[ \inputcolorboxminted{firstline=53,lastline=91}{examples/dds.py}
declare function={
func(\x)= (\x<0) * (0) + The generated RF output of the above example consists of the following features in sequence:
and(\x>=0, \x<2) * (0.42*cos(deg(10*pi*\x))) + \begin{enumerate}
and(\x>=2, \x<3) * (0) + \item A 5 MHz RF pulse for 2 microseconds.
and(\x>=3, \x<4) * (0.42*cos(deg(10*pi*\x))) + \item No signal for 1 microseconds.
and(\x>=4, \x<7) * (0) + \item A 5 MHz RF pulse for 1 microseconds.
and(\x>=7, \x<7.5) * (0.42*cos(deg(10*pi*\x))); \item No signal for 3 microseconds.
} \item Go back to item 1.
] \end{enumerate}
\begin{axis}[ The expected waveform is plotted on the following figure. Note that phase of the RF pulses may drift gradually. Urukul was operated with 50$\Omega$ termination for this waveform.
axis x line=middle, axis y line=middle,
\begin{tikzpicture}[
declare function={
func(\x)= (\x<0) * (0) +
and(\x>=0, \x<2) * (0.42*cos(deg(10*pi*\x))) +
and(\x>=2, \x<3) * (0) +
and(\x>=3, \x<4) * (0.42*cos(deg(10*pi*\x))) +
and(\x>=4, \x<7) * (0) +
and(\x>=7, \x<7.5) * (0.42*cos(deg(10*pi*\x)));
}
]
\begin{axis}[
axis x line=middle, axis y line=middle,
every axis x label/.style={
at={(ticklabel* cs:1.05)},
anchor=west,
},
every axis y label/.style={
at={(ticklabel* cs:1.05)},
anchor=south,
},
height=5cm,
width=16cm,
ymin=-0.5, ymax=0.5, ytick={-0.42,0.42}, ylabel=Voltage ($V$),
xmin=-0.5, xmax=7.5, xtick={0,...,7}, xlabel=Time ($\mu s$),
]
\addplot[blue, samples=1000, domain=-0.5:7.5]{func(x)};
\end{axis}
\end{tikzpicture}
\subsection{Simple amplitude ramp (AD9910 only)}
An amplitude ramp of an RF signal can be generated by modifying the \texttt{self.amp} array in the previous example.
\inputcolorboxminted{firstline=95,lastline=98}{examples/dds.py}
The generated RF output has an incrementing amplitude scale factor (ASF), increasing by 0.1 at every microsecond. Once the ASF reaches 1.0, it drops back to 0.0 at the next microsecond. The expected waveform over 1 cycle is plotted on the following figure. Note that phase of the RF pulses may drift gradually. Urukul was operated with 50$\Omega$ termination for this waveform.
\begin{tikzpicture}[
declare function={
func(\x)= and(\x>=0, \x<1) * (0) +
and(\x>=1, \x<2) * (0.05*cos(deg(10*pi*\x))) +
and(\x>=2, \x<3) * (0.1*cos(deg(10*pi*\x))) +
and(\x>=3, \x<4) * (0.15*cos(deg(10*pi*\x))) +
and(\x>=4, \x<5) * (0.2*cos(deg(10*pi*\x))) +
and(\x>=5, \x<6) * (0.25*cos(deg(10*pi*\x))) +
and(\x>=6, \x<7) * (0.3*cos(deg(10*pi*\x))) +
and(\x>=7, \x<8) * (0.35*cos(deg(10*pi*\x))) +
and(\x>=8, \x<9) * (0.4*cos(deg(10*pi*\x))) +
and(\x>=9, \x<10) * (0.45*cos(deg(10*pi*\x))) +
and(\x>=10, \x<11) * (0.5*cos(deg(10*pi*\x)));
}
]
\begin{axis}[
axis x line=middle, axis y line=middle,
every axis x label/.style={ every axis x label/.style={
at={(ticklabel* cs:1.05)}, at={(ticklabel* cs:1.05)},
anchor=west, anchor=west,
@ -889,132 +1011,33 @@ Urukul was operated with a 50$\Omega$ termination to produce the waveform.
at={(ticklabel* cs:1.05)}, at={(ticklabel* cs:1.05)},
anchor=south, anchor=south,
}, },
height=5cm, minor tick num=4,
width=16cm, grid=both,
ymin=-0.5, ymax=0.5, ytick={-0.42,0.42}, ylabel=Voltage ($V$), height=8cm,
xmin=-0.5, xmax=7.5, xtick={0,...,7}, xlabel=Time ($\mu s$), width=16cm,
] ymin=-0.7, ymax=0.7, ytick={-0.5,...,0,...,0.5}, ylabel=Voltage ($V$),
xmin=0, xmax=11.5, xtick={0,...,11}, xlabel=Time ($\mu s$),
\addplot[blue, samples=1000, domain=-0.5:7.5]{func(x)}; ]
\end{axis} \addplot[blue, samples=1500, domain=0:11]{func(x)};
\end{tikzpicture} \end{axis}
\end{tikzpicture}
\subsection{Simple amplitude ramp (AD9910 only)}
An amplitude ramp of an RF signal can be generated by modifying the \texttt{self.amp} array in the previous example.
\inputcolorboxminted{firstline=95,lastline=98}{examples/dds.py}
The generated RF output has an incrementing amplitude scale factor (ASF), increasing by 0.1 at every microsecond. Once the ASF reaches 1.0, it drops back to 0.0 at the next microsecond. The expected waveform over 1 cycle is plotted on the following figure. Note that phase of the RF pulses may drift gradually.
Urukul was operated with a 50$\Omega$ termination to produce the waveform.
\begin{tikzpicture}[
declare function={
func(\x)= and(\x>=0, \x<1) * (0) +
and(\x>=1, \x<2) * (0.05*cos(deg(10*pi*\x))) +
and(\x>=2, \x<3) * (0.1*cos(deg(10*pi*\x))) +
and(\x>=3, \x<4) * (0.15*cos(deg(10*pi*\x))) +
and(\x>=4, \x<5) * (0.2*cos(deg(10*pi*\x))) +
and(\x>=5, \x<6) * (0.25*cos(deg(10*pi*\x))) +
and(\x>=6, \x<7) * (0.3*cos(deg(10*pi*\x))) +
and(\x>=7, \x<8) * (0.35*cos(deg(10*pi*\x))) +
and(\x>=8, \x<9) * (0.4*cos(deg(10*pi*\x))) +
and(\x>=9, \x<10) * (0.45*cos(deg(10*pi*\x))) +
and(\x>=10, \x<11) * (0.5*cos(deg(10*pi*\x)));
}
]
\begin{axis}[
axis x line=middle, axis y line=middle,
every axis x label/.style={
at={(ticklabel* cs:1.05)},
anchor=west,
},
every axis y label/.style={
at={(ticklabel* cs:1.05)},
anchor=south,
},
minor tick num=4,
grid=both,
height=8cm,
width=16cm,
ymin=-0.7, ymax=0.7, ytick={-0.5,...,0,...,0.5}, ylabel=Voltage ($V$),
xmin=0, xmax=11.5, xtick={0,...,11}, xlabel=Time ($\mu s$),
]
\addplot[blue, samples=1500, domain=0:11]{func(x)};
\end{axis}
\end{tikzpicture}
\newpage \newpage
\subsection{RAM synchronization (AD9910 only)} \subsection{RAM synchronization (AD9910 only)}
Multiple RAM channels can also be synchronized. Similar to the 10 MHz single-tone RF signals, specify \texttt{phase} when calling \texttt{dds.set()} in \texttt{configure\char`_ram\char`_mode}. For example, set phase to 0 for the channels (\texttt{phase=0.0}):
\inputcolorboxminted{firstline=116,lastline=116}{examples/dds.py} Multiple RAM channels can also be synchronized. Similar to the 10 MHz single-tone RF signals, specify \texttt{phase} when calling \texttt{dds.set()} in \texttt{configure\char`_ram\char`_mode}. For example, set phase to 0 for the channels (\texttt{phase=0.0}):
Then, replace the \texttt{run()} function with the following: \inputcolorboxminted{firstline=116,lastline=116}{examples/dds.py}
\inputcolorboxminted{firstline=122,lastline=134}{examples/dds.py} Then, replace the \texttt{run()} function with the following:
Two phase-coherent RF signal with the same waveform as the previous figure (from either RAM examples) should be generated. \inputcolorboxminted{firstline=122,lastline=134}{examples/dds.py}
\subsection{Voltage-controlled DDS amplitude (SU-Servo only)} Two phase-coherent RF signals with the same waveform as the previous figure (from either RAM examples) should be generated.
The SU-Servo feature can be enabled by integrating the 4410 DDS Urukul with a 5108 Sampler. Amplitude of the DDS output can be controlled by the ADC input of the Sampler through PI control, characterised by the following transfer function:
\[H(s)=k_p+\frac{k_i}{s+\frac{k_i}{g}}\] % Direct input to avoid issues with minted
\input{shared/suservo.tex}
In the following example, the amplitude of DDS is proportional to the ADC input from Sampler. First, initialize the RTIO, SU-Servo and its channel. Note that the programmable gain of the Sampler is $10^0=1$ and the input range is [-10V, 10V].
\inputcolorboxminted{firstline=10,lastline=17}{examples/suservo.py}
Next, setup the PI control as an IIR filter. It has -1 proportional gain $k_p$ and no integrator gain $k_i$.
\inputcolorboxminted{firstline=18,lastline=25}{examples/suservo.py}
Then, configure the DDS frequency to 10 MHz with 3V input offset.
When input voltage $\geq$ offset voltage, the DDS output amplitude is 0.
\inputcolorboxminted{firstline=26,lastline=30}{examples/suservo.py}
SU-Servo encodes the ADC voltage in a linear scale [-1, 1]. Therefore, 3V is converted to 0.3. Note that the ASF of all DDS channels are capped at 1.0 and the amplitude clips when ADC input $\leq -7V$ with the above IIR filter.
Finally, enable the SU-Servo channel with the IIR filter programmed beforehand:
\inputcolorboxminted{firstline=32,lastline=33}{examples/suservo.py}
A 10 MHz DDS signal is generated from the example above, with amplitude controllable by ADC. The RMS voltage of the DDS channel against the ADC voltage is plotted. The DDS channel is terminated with 50\textOmega.
\begin{center}
\begin{tikzpicture}[
declare function={
func(\x)= and(\x>=-10, \x<-7) * (160) +
and(\x>=-7, \x<3) * (16*(3-x)) +
and(\x>=3, \x<10) * (0);
}
]
\begin{axis}[
axis x line=middle, axis y line=middle,
every axis x label/.style={
at={(axis description cs:0.5,-0.1)},
anchor=north,
},
every axis y label/.style={
at={(ticklabel* cs:1.05)},
anchor=south,
},
minor x tick num=3,
grid=both,
height=8cm,
width=12cm,
ymin=-5, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
xmin=-10, xmax=10, xtick={-10,-8,...,10}, xlabel=Sampler Voltage ($V$),
]
\addplot[very thick, blue, samples=21, domain=-10:10]{func(x)};
\end{axis}
\end{tikzpicture}
\end{center}
DDS signal should be attenuated. High output power affects the linearity due to the 1 dB compression point of the amplifier at 13 dBm output power. 15 dB attenuation at the digital attenuator was applied in this example.
\ordersection{4410/4412 DDS Urukul} \ordersection{4410/4412 DDS Urukul}

149
5108.tex
View File

@ -3,8 +3,8 @@
\title{5108 ADC Sampler} \title{5108 ADC Sampler}
\author{M-Labs Limited} \author{M-Labs Limited}
\date{January 2022} \date{January 2025}
\revision{Revision 1} \revision{Revision 2}
\companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}} \companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}}
\begin{document} \begin{document}
@ -12,30 +12,31 @@
\section{Features} \section{Features}
\begin{itemize} \begin{itemize}
\item{8-channel ADC} \item{8-channel ADC}
\item{16-bits resolution} \item{16-bits resolution}
\item{1.5 MSPS simultaneously on all channels} \item{1.5 MSPS simultaneously on all channels}
\item{Full scale input voltage, $\pm$10mV to $\pm$10V} \item{Full scale input voltage, $\pm$10mV to $\pm$10V}
\item{BNC connector} \item{BNC connector}
\item{SMA breakout with 5528 SMA-IDC adapter} \item{SMA breakout with 5528 SMA-IDC adapter}
\end{itemize} \end{itemize}
\section{Applications} \section{Applications}
\begin{itemize} \begin{itemize}
\item{Sample intermediate-frequency (IF) waveform} \item{Sample intermediate-frequency (IF) waveform}
\item{Monitor laser power with a photodiode} \item{Monitor laser power with a photodiode}
\item{Synchronize laser frequencies with a phase frequency detector} \item{Synchronize laser frequencies with a phase frequency detector}
\item{Form a laser intensity servo with 4410 Urukul} \item{Form a laser intensity servo with 4410 Urukul}
\end{itemize} \end{itemize}
\section{General Description} \section{General Description}
The 5108 ADC Sampler is a 8hp EEM module, part of the ARTIQ/Sinara family. It adds analog-digital converting capabilities to carrier cards such as 1124 Kasli and 1125 Kasli-SoC.
It provides eight analog-to-digital channels, exposed by eight BNC connectors. Each channel supports input voltage ranges from \textpm 10mV to \textpm 10V. All channels can be sampled simultaneously. Channels can broken out to SMA by adding a 5528 SMA-IDC card. The 5108 ADC Sampler is an 8hp EEM module, part of the ARTIQ/Sinara family. It adds analog-digital converting capabilities to carrier cards such as 1124 Kasli and 1125 Kasli-SoC. It can also be combined with 4410 DDS Urukul to form the ARTIQ SU-Servo configuration.
5108 ADC Sampler provides a sample rate of 1.5 MSPS. However, the sample rate in practice is typically limited by the use of ARTIQ-Python kernel code. It provides eight analog-to-digital channels, exposed by eight BNC connectors. Each channel supports input voltage ranges from \textpm 10mV to \textpm 10V. All channels can be sampled simultaneously. Channels can broken out to SMA by adding a 5528 SMA-IDC card.
5108 ADC Sampler provides a sample rate of 1.5 MSPS. However, the sample rate in practice is typically limited by the use of ARTIQ-Python kernel code.
% Switch to next column % Switch to next column
\vfill\break \vfill\break
@ -493,89 +494,49 @@ Bandwidth of small signal and large signal input is shown below\repeatfootnote{s
\newpage \newpage
\begin{multicols}{2}
\section{Configuring Termination} \section{Configuring Termination}
\begin{multicols}{2}
The input termination must be configured by setting physical switches on the board. The termination switches are found at the middle left part of the card are by-channel. Switching the termination switches on adds a 50\textOmega~termination between the differential input signals.
Regardless of switch configurations, the differential input signals are separately terminated with 100k\textOmega~to the PCB ground. The input termination must be configured by setting physical switches on the board. The termination switches are found at the middle left part of the card and by-channel. Setting these switches to \texttt{on} adds a 50\textOmega~termination between the differential input signals.
\vspace*{\fill} Regardless of switch configurations, the differential input signals are separately terminated with 100k\textOmega~to the PCB ground.
\columnbreak
\begin{center} \vspace*{\fill}
\centering \columnbreak
\includegraphics[height=1.7in]{sampler_switches.jpg} \begin{center}
\captionof{figure}{Position of switches} \centering
\end{center} \includegraphics[height=1.7in]{sampler_switches.jpg}
\end{multicols} \captionof{figure}{Position of switches}
\end{center}
\end{multicols}
\sysdescsection
5108 Sampler should be entered into the peripherals list of the corresponding core device in the following format:
\begin{tcolorbox}[colback=white]
\begin{minted}{json}
{
"type": "sampler",
"ports": [0, 1]
}
\end{minted}
\end{tcolorbox}
Replace 0 and 1 with the EEM port numbers used on the core device. Any ports can be used.
\newpage
\codesection{5108 ADC Sampler} \codesection{5108 ADC Sampler}
\subsection{Get input voltage} \subsection{Get input voltage}
The following example initializes the Sampler card with 1x gain on all ADC channels. At the end all ADC channels are sampled. The following example initializes the Sampler card with 1x gain on all ADC channels. At the end all ADC channels are sampled.
\inputcolorboxminted{firstline=9,lastline=21}{examples/sampler.py} \inputcolorboxminted{firstline=9,lastline=21}{examples/sampler.py}
\newpage % Direct input to avoid issues with minted
\input{shared/suservo.tex}
\subsection{Voltage-controlled DDS amplitude (SU-Servo only)}
SU-Servo configuration can be enabled by integrating the 5108 ADC Sampler with 4410 DDS Urukul. Amplitude of the DDS output can be controlled by the ADC input of the Sampler through PI control, characterised by the following transfer function:
\[H(s)=k_p+\frac{k_i}{s+\frac{k_i}{g}}\]
In the following example, the amplitude of DDS is proportional to the ADC input from Sampler.
First, initialize the RTIO, SU-Servo and its channel with 1x gain.
\inputcolorboxminted{firstline=10,lastline=17}{examples/suservo.py}
Next, set up the PI control as an IIR filter. It has -1 proportional gain $k_p$ and no integrator gain $k_i$.
\inputcolorboxminted{firstline=18,lastline=25}{examples/suservo.py}
Then, configure the DDS frequency to 10 MHz with 3V input offset. When input voltage $\geq$ offset voltage, the DDS output amplitude is 0.
\inputcolorboxminted{firstline=26,lastline=30}{examples/suservo.py}
SU-Servo encodes the ADC voltage in a linear scale [-1, 1]. Therefore, 3V is converted to 0.3. Note that the ASF of all DDS channels are capped at 1.0; the amplitude clips when ADC input $\leq -7V$ with the above IIR filter.
Finally, enable the SU-Servo channel with the IIR filter programmed beforehand:
\inputcolorboxminted{firstline=32,lastline=33}{examples/suservo.py}
\newpage
A 10 MHz DDS signal is generated from the example above, with amplitude controllable by ADC. The RMS voltage of the DDS channel against the ADC voltage is plotted. The DDS channel is terminated with 50\textOmega.
\begin{center}
\begin{tikzpicture}[
declare function={
func(\x)= and(\x>=-10, \x<-7) * (160) +
and(\x>=-7, \x<3) * (16*(3-x)) +
and(\x>=3, \x<10) * (0);
}
]
\begin{axis}[
axis x line=middle, axis y line=middle,
every axis x label/.style={
at={(axis description cs:0.5,-0.1)},
anchor=north,
},
every axis y label/.style={
at={(ticklabel* cs:1.05)},
anchor=south,
},
minor x tick num=3,
grid=both,
height=8cm,
width=12cm,
ymin=-5, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
xmin=-10, xmax=10, xtick={-10,-8,...,10}, xlabel=Sampler Voltage ($V$),
]
\addplot[very thick, blue, samples=21, domain=-10:10]{func(x)};
\end{axis}
\end{tikzpicture}
\end{center}
DDS signal should be attenuated. High output power affects the linearity due to the 1 dB compression point of the amplifier at 13 dBm output power. 15 dB attenuation at the digital attenuator was applied in this example.
\ordersection{5108 ADC Sampler} \ordersection{5108 ADC Sampler}

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\section{ARTIQ SU-Servo}
ARTIQ also allows for the joint configuration of one or two 4410 DDS Urukul cards and a 5108 Sampler as an integrated servo for laser intensity stabilization and similar purposes. SU-Servo also supports other additional features, such as preconfigured profiles per channel and automatic integrator hold. Urukuls must be 4410 AD9910 variants (not 4412 AD9912) and set to SU-Servo mode by DIP switch.
\subsection{SU-Servo System Description Entry}
SU-Servo should be entered in the peripherals list of the corresponding core device in a single entry in the following format:
\begin{tcolorbox}[colback=white]
\begin{minted}{json}
{
"type": "suservo",
"sampler_ports": [0, 1],
"urukul0_ports": [2, 3],
"urukul1_ports": [4, 5], // optional
"clk_sel": 2 // select 0 to 2
}
\end{minted}
\end{tcolorbox}
Enter the actual EEM port numbers used on the core device. Any ports can be used. If using only one Urukul (and half of the available Sampler channels), the \texttt{urukul1\_ports} field may be left out entirely.
For the \texttt{clk\_sel} field, \texttt{0} represents the internal 100 MHz oscillator, \texttt{1} represents SMA input, and \texttt{2} represents MMCX input.
% miraculously, this newpage is good for both Sampler and Urukul datasheets!
% will probably break if any sections are added though
\newpage
\section{Example SU-Servo Code}
In SU-Servo configuration, amplitude of the Urukul DDS output can be controlled with the Sampler ADC input through PI control, characterised by the following transfer function:
\[H(s)=k_p+\frac{k_i}{s+\frac{k_i}{g}}\]
In the following example, the DDS amplitude is set proportionally to the ADC input from Sampler. We initialize SU-Servo and all channels first. Note that the programmable gain of the Sampler is $10^0=1$ and the input range is [-10V, 10V].
\inputcolorboxminted{firstline=10,lastline=17}{examples/suservo.py}
Next, we set up the PI control as an IIR filter. It has -1 proportional gain $k_p$ and no integrator gain $k_i$.
\inputcolorboxminted{firstline=18,lastline=25}{examples/suservo.py}
Then, configure the DDS frequency to 10 MHz with 3V input offset. When input voltage $\geq$ offset voltage, the DDS output amplitude is 0.
\inputcolorboxminted{firstline=26,lastline=30}{examples/suservo.py}
SU-Servo encodes the ADC voltage on a linear scale [-1, 1]. Therefore, 3V is converted to 0.3. Note that the ASF of all DDS channels ss capped at 1.0 and the amplitude clips when ADC input $\leq -7V$ with the above IIR filter.
Finally, enable the SU-Servo channel with the IIR filter programmed beforehand:
\inputcolorboxminted{firstline=32,lastline=33}{examples/suservo.py}
A 10 MHz DDS signal is generated from the example above, with amplitude controllable by ADC. The RMS voltage of the DDS channel against the ADC voltage is plotted. The DDS channel is terminated with 50\textOmega.
\begin{center}
\begin{tikzpicture}[
declare function={
func(\x)= and(\x>=-10, \x<-7) * (160) +
and(\x>=-7, \x<3) * (16*(3-x)) +
and(\x>=3, \x<10) * (0);
}
]
\begin{axis}[
axis x line=middle, axis y line=middle,
every axis x label/.style={
at={(axis description cs:0.5,-0.1)},
anchor=north,
},
every axis y label/.style={
at={(ticklabel* cs:1.05)},
anchor=south,
},
minor x tick num=3,
grid=both,
height=8cm,
width=12cm,
ymin=-5, ymax=180, ytick={0,16,...,160}, ylabel=DDS RMS Voltage ($mV_{rms}$),
xmin=-10, xmax=10, xtick={-10,-8,...,10}, xlabel=Sampler Voltage ($V$),
]
\addplot[very thick, blue, samples=21, domain=-10:10]{func(x)};
\end{axis}
\end{tikzpicture}
\end{center}
DDS signal should be attenuated. High output power affects the linearity due to the 1 dB compression point of the amplifier at 13 dBm output power. 15 dB attenuation at the digital attenuator was applied in this example.