datasheets/4456.tex

\documentclass[10pt]{datasheet}
\usepackage{palatino}
\usepackage{textgreek}
\usepackage{minted}
\usepackage{tcolorbox}
\usepackage{etoolbox}

\usepackage[justification=centering]{caption}

\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage[english]{isodate}

\usepackage{graphicx}
\usepackage{subfigure}

\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{circuitikz}
\usepackage{pifont}
\usetikzlibrary{calc}
\usetikzlibrary{fit,backgrounds} 

\title{4456 Synthesizer Mirny}
\author{M-Labs Limited}
\date{January 2022}
\revision{Revision 1}
\companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}}

\begin{document}
\maketitle

\section{Features}

\begin{itemize}
\item{4-channel VCO/PLL.}
\item{Output frequency ranges from 53 MHz to \textgreater 4 GHz.}
\item{Up to 13.6 GHz with Almazny mezzanine.}
\item{Higher frequency resolution than Urukul.}
\item{Lower jitter and phase noise.}
\item{Large frequency changes take several milliseconds.}
\end{itemize}

\section{Applications}

\begin{itemize}
\item{Low-noise microwave source.}
\item{Quantum state control.}
\item{Driving acousto/electro-optic modulators.}
\end{itemize}

\section{General Description}
The 4456 Synthesizer Mirny card is a 4hp EEM module part of the ARTIQ Sinara family.
It adds microwave generation capabilities to carrier cards such as 1124 Kasli and 1125 Kasli-SoC.

It provides 4 channels of PLL frequency synthesis.
Output frequency from 53 MHz to \textgreater 4 GHz are supported.
The range can be expanded up to 13.6 GHz with Almazny mezzanine.
Each channel can be attenuated from 0 to -31.5 dB by a digital attenuator.
RF switches on each channel provides at least 50 dB isolation.


% Switch to next column
\vfill\break

\newcommand*{\MyLabel}[3][2cm]{\parbox{#1}{\centering #2 \\ #3}}
\newcommand*{\MymyLabel}[3][4cm]{\parbox{#1}{\centering #2 \\ #3}}
\newcommand{\repeatfootnote}[1]{\textsuperscript{\ref{#1}}}
\newcommand{\inputcolorboxminted}[2]{%
    \begin{tcolorbox}[colback=white]
    \inputminted[#1, gobble=4]{python}{#2}
    \end{tcolorbox}
}

\begin{figure}[h]
    \centering
    \scalebox{0.95}{
    \begin{circuitikz}[european, scale=0.95, every label/.append style={align=center}]

        \begin{scope}[]

            % Node to pin-point the locations of SMA symbols
            \draw[color=white, text=black] (-0.1, 0.35) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (ext_clk) {};
            \draw[color=white, text=black] (-0.1, 0) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (mmcx) {};
            \draw[color=white, text=black] (-0.1, -1.75) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (rf0) {};
            \draw[color=white, text=black] (-0.1, -2.45) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (rf1) {};
            \draw[color=white, text=black] (-0.1, -3.15) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (rf2) {};
            \draw[color=white, text=black] (-0.1, -3.85) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (rf3) {};

            % Node to pin-point the locations of SMP symbols
            \draw[color=white, text=black] (2.65, -1.75) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (smp0) {};
            \draw[color=white, text=black] (2.65, -2.45) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (smp1) {};
            \draw[color=white, text=black] (2.65, -3.15) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (smp2) {};
            \draw[color=white, text=black] (2.65, -3.85) node[twoportshape, circuitikz/bipoles/twoport/width=1.2, scale=0.4 ] (smp3) {};

            % Extra node to expand the future channel dotted area eastward
            \draw[color=white, text=black] (2.1, -3.85) node[twoportshape, circuitikz/bipoles/twoport/width=0.4, scale=0.4 ] (sig3_east) {};

            % Labels for female EXT_CLK, MMCX, RF {0, 1, 2, 3}
            \node [label=left:\tiny{EXT CLK}] at (0.35, 0.35) {};
            \node [label=left:\tiny{MMCX}] at (0.35, 0) {};
            \node [label=left:\tiny{RF 0}] at (0.35, -1.75) {};
            \node [label=left:\tiny{RF 1}] at (0.35, -2.45) {};
            \node [label=left:\tiny{RF 2}] at (0.35, -3.15) {};
            \node [label=left:\tiny{RF 3}] at (0.35, -3.85) {};

            % draw female EXT_CLK, MMCX, RF {0, 1, 2, 3}
            \begin{scope}[scale=0.07 , rotate=-90, xshift=-5cm, yshift=2cm]
                \draw (0,0.65) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
                \clip (-0.8,0) rectangle (0.8,0.8);
                \draw (0,0) circle(0.8);
            \end{scope}
            \begin{scope}[scale=0.07 , rotate=-90, xshift=0cm, yshift=2cm]
                \draw (0,0.65) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
                \clip (-0.8,0) rectangle (0.8,0.8);
                \draw (0,0) circle(0.8);
            \end{scope}
            \begin{scope}[scale=0.07 , rotate=-90, xshift=25cm, yshift=2cm]
                \draw (0,0.65) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
                \clip (-0.8,0) rectangle (0.8,0.8);
                \draw (0,0) circle(0.8);
            \end{scope}
            \begin{scope}[scale=0.07 , rotate=-90, xshift=35cm, yshift=2cm]
                \draw (0,0.65) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
                \clip (-0.8,0) rectangle (0.8,0.8);
                \draw (0,0) circle(0.8);
            \end{scope}                        
            \begin{scope}[scale=0.07 , rotate=-90, xshift=45cm, yshift=2cm]
                \draw (0,0.65) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
                \clip (-0.8,0) rectangle (0.8,0.8);
                \draw (0,0) circle(0.8);
            \end{scope} 
            \begin{scope}[scale=0.07 , rotate=-90, xshift=55cm, yshift=2cm]
                \draw (0,0.65) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
                \clip (-0.8,0) rectangle (0.8,0.8);
                \draw (0,0) circle(0.8);
            \end{scope}

            % draw female SMP connectors
            \begin{scope}[scale=0.07 , rotate=90, xshift=-25cm, yshift=-45cm]
                \draw (0,0) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
            \end{scope}
            \begin{scope}[scale=0.07 , rotate=90, xshift=-35cm, yshift=-45cm]
                \draw (0,0) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
            \end{scope}
            \begin{scope}[scale=0.07 , rotate=90, xshift=-45cm, yshift=-45cm]
                \draw (0,0) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
            \end{scope}
            \begin{scope}[scale=0.07 , rotate=90, xshift=-55cm, yshift=-45cm]
                \draw (0,0) -- (0,3);
                \clip (-1.5,0) rectangle (1.5,1.5);
                \draw (0,0) circle(1.5);
            \end{scope}

            % Labels for female SMP {0, 1, 2, 3}
            \node [label=right:\tiny{SMP 0}] at (3, -1.75) {};
            \node [label=right:\tiny{SMP 1}] at (3, -2.45) {};
            \node [label=right:\tiny{SMP 2}] at (3, -3.15) {};
            \node [label=right:\tiny{SMP 3}] at (3, -3.85) {};

            % Draw the internal oscillator
            \draw (0.02, -0.45) node[twoportshape, t={OSC}, circuitikz/bipoles/twoport/width=0.8, scale=0.4] (xo) {};

            % Draw the clock buffers
            \draw (1.6, 0) node[twoportshape, t={CLK Buffers}, circuitikz/bipoles/twoport/width=2.2, scale=0.5, rotate=-90] (clk_buf) {};

            % Connect CLK_IN to DDS clock buffers
            \draw [-latexslim] (ext_clk.east) -- (1.35, 0.35);
            \draw [-latexslim] (mmcx.east) -- (1.35, 0);
            \draw [-latexslim] (xo.east) -- (1.35, -0.45);

            % Connect CPLD clk_sel to DDS clock buffers
            \draw [-latexslim] (clk_buf.east) -- (1.6, -1.35);

            % Signal path: From control signals / clock of PLL to output of the RF switches
            \draw (1.6, -1.75) node[twoportshape, t={PLL Signal Path}, circuitikz/bipoles/twoport/width=2, scale=0.5] (sig0) {};
            \draw (1.6, -2.45) node[twoportshape, t={PLL Signal Path}, circuitikz/bipoles/twoport/width=2, scale=0.5] (sig1) {};
            \draw (1.6, -3.15) node[twoportshape, t={PLL Signal Path}, circuitikz/bipoles/twoport/width=2, scale=0.5] (sig2) {};
            \draw (1.6, -3.85) node[twoportshape, t={PLL Signal Path}, circuitikz/bipoles/twoport/width=2, scale=0.5] (sig3) {};

            % Connect RF to DDS block
            \draw [latexslim-] (rf0.east) -- (sig0.west);
            \draw [latexslim-] (rf1.east) -- (sig1.west);
            \draw [latexslim-] (rf2.east) -- (sig2.west);
            \draw [latexslim-] (rf3.east) -- (sig3.west);

            % PLL signal path dotted area
            \node[draw, dotted, thick, rounded corners, inner xsep=0.7em, inner ysep=0.4em, fit=(rf3)(sig0)(sig3_east.east)] (abs_dds) {};
            \node[fill=white, rotate=-90, scale=0.7] at (abs_dds.west) {PLL Channels};

            % CPLD after signal path 0
            \draw (4.6, -0.2) node[twoportshape, t={CPLD}, circuitikz/bipoles/twoport/width=1.1, scale=0.8, rotate=-90] (cpld) {};

            % Connect CPLD to:
            %   PLL clock buffer
            \draw [latexslim-] (clk_buf.north) -- (4.2, 0);
            %   PLL signal path
            \draw [latexslim-latexslim] (4.2, -0.4) -- (2.2, -0.4) -- (2.2, -1.35);

            % Connect each PLL channel to its cooresponding SMP connector
            \draw [-latexslim] (sig0.east) -- (smp0.east);
            \draw [-latexslim] (sig1.east) -- (smp1.east);
            \draw [-latexslim] (sig2.east) -- (smp2.east);
            \draw [-latexslim] (sig3.east) -- (smp3.east);

            % Draw AFE header
            \draw (4.6, -2.8) node[twoportshape, t={AFE Header}, circuitikz/bipoles/twoport/width=1.8, scale=0.6, rotate=-90] (afe) {};

            % Connect AFE header to CPLD
            \draw [latexslim-latexslim] (cpld.east) -- (afe.west);

            % Draw LVDS transceivers, EEM
            \draw (6.2, 0) node[twoportshape, t=\MymyLabel{LVDS}{Transceiever}, circuitikz/bipoles/twoport/width=1.8, scale=0.5, rotate=-90] (lvds0) {};
            \draw (6.2, -1.6) node[twoportshape, t=\MymyLabel{LVDS}{Transceiever}, circuitikz/bipoles/twoport/width=1.8, scale=0.5, rotate=-90] (lvds1) {};
            \draw (7.8, -1.5) node[twoportshape, t={EEM Port}, circuitikz/bipoles/twoport/width=3.8, scale=0.7, rotate=-90] (eem) {};

            % Connect LVDS transceiver to CPLD
            \draw [latexslim-latexslim] (lvds0.south) -- (5, 0);
            \draw [latexslim-latexslim] (lvds1.south) -- (5.5, -1.6) -- (5.5, -0.4) -- (5, -0.4);

            % Connect EEM to LVDS transceiver
            \draw [latexslim-latexslim] (lvds0.north) -- (7.45, 0);
            \draw [latexslim-latexslim] (lvds1.north) -- (7.45, -1.6);

            % Draw EEPROM
            \draw (6.2, -3.85) node[twoportshape, t={EEPROM}, circuitikz/bipoles/twoport/width=1.8, scale=0.5] (eeprom) {};

            % Interconnect I2C between EEPROM, AFE header & EEM
            \draw [latexslim-latexslim] (afe.north) -- (7.45, -2.8);
            \draw [-latexslim] (6.2, -2.8) -- (eeprom.north);

        \end{scope}

    \end{circuitikz}
    }

    \caption{Simplified Block Diagram}
\end{figure}

\begin{figure}[h]
    \centering
    \scalebox{0.88}{
    \begin{circuitikz}[european, scale=0.95, every label/.append style={align=center}]

        \begin{scope}[]
            % RF switches {0, 1, 2, 3} for SMA {0, 1, 2, 3}
            \draw (1.4, 0) node[twoportshape, t={RF Switch}, circuitikz/bipoles/twoport/width=1.5, scale=0.6] (sw) {};

            % Amplifiers {0, 1, 2, 3} for RF switches {0, 1, 2, 3}
            \draw (3, 0) node[buffer, circuitikz/bipoles/twoport/width=1.2, scale=-0.5] (amp) {};

            % Attenuators {0, 1, 2, 3} for amplifiers {0, 1, 2, 3}
            \draw (4.6, 0) node[twoportshape, t=\MymyLabel{Digital}{Attenuator}, circuitikz/bipoles/twoport/width=2, scale=0.6, rotate=-90] (att) {};

            % PLL {0, 1, 2, 3} for attenuators {0, 1, 2, 3}
            \draw (6.6, 0) node[twoportshape, t={PLL}, circuitikz/bipoles/twoport/width=1.2, scale=0.7] (pll) {};

            % Connect main signal path
            \draw [-latexslim] (pll.west) -- (att.north);
            \draw [-latexslim] (att.south) -- (amp.west);
            \draw [-latexslim] (amp.east) -- (sw.east);

            % Connect abstract DDS clock input
            \node [label=above:\tiny{CLK Buffers}] at (8, -0.2) {};
            \draw [latexslim-] (pll.east) -- (8, 0);

            % Insert CPLD signal to relevant components
            \node [label=above:\tiny{CPLD}] at (8, 1.1) {};
            \draw [-] (1.4, 1.3) -- (8, 1.3);
            \draw [-latexslim] (1.4, 1.3) -- (sw.north);
            \draw [-latexslim] (4.6, 1.3) -- (att.west);
            \draw [-latexslim] (6.6, 1.3) -- (pll.north);

            % Connect PLL to SMP connectors
            \draw [-latexslim] (pll.south) -- (6.6, -1.35);
            \node [label=below:\tiny{SMP}] at (6.6, -1.15) {};

            % Direct the RF switch output to RF output
            \draw [-latexslim] (sw.west) -- (0, 0);
            \node [label=left:\tiny{RF}] at (0.2, 0) {};

        \end{scope}

    \end{circuitikz}
    }

    \caption{Simplified DDS Signal Path}
\end{figure}

\begin{figure}[hbt!]
    \centering
    \includegraphics[height=2in]{Mirny_FP.pdf}
    \includegraphics[height=2in]{photo4456.jpg}
    \caption{Mirny Card photo}
\end{figure}

% For wide tables, a single column layout is better. It can be switched
% page-by-page.
\onecolumn

\section{Electrical Specifications}

Specifications of parameters are based on the datasheets of the
PLL IC(ADF5356\footnote{\label{adf5356}https://www.analog.com/media/en/technical-documentation/data-sheets/ADF5356.pdf}),
clock buffer IC (Si53340-B-GM\footnote{\label{clock_buffer}https://www.skyworksinc.com/-/media/Skyworks/SL/documents/public/data-sheets/si5334x-datasheet.pdf}),
digital attenuator IC (HMC542BLP4E\footnote{\label{attenuator}https://www.analog.com/media/en/technical-documentation/data-sheets/hmc542b.pdf}).
Test results are from the Krzysztof Belewicz's thesis "Microwave synthesizer for driving ion traps in quantum computing"\footnote{\label{mirny_thesis}https://m-labs.hk/Krzysztof\_Belewicz\_V1.1.pdf}.

\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
    % Note to future editors, the clk_div signal in gateware is not used.
    % Input divider was removed (mirny#8)
    Clock input & & & & & \\
        \hspace{3mm}Frequency\repeatfootnote{adf5356}
            & 10 & & 250 & MHz & Single-ended clock input (PLL config.) \\
            & 10 & & 600 & MHz & Differential clock input (PLL config.) \\
        \cline{2-6}
        \hspace{3mm}Differential input swing\repeatfootnote{clock_buffer}
            & 0.11 & & 1.55 & V\textsubscript{p-p} & \\
    \thickhline
\end{tabularx}
\end{threeparttable}
\end{table}

\begin{table}[h]
\centering
\begin{threeparttable}
\caption{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
    Frequency & 53.125 &  & 4000 & MHz & \\
    \hline
    Digital attenuation\repeatfootnote{attenuator} & -31.5 & & 0 & dB & \\
    \hline
    Resolution & \multicolumn{4}{c|}{} & \\
    \hspace{3mm} Frequency\repeatfootnote{adf5356} & \multicolumn{4}{c|}{52 bits} & \\
    \hspace{3mm} Phase offset\repeatfootnote{adf5356} & \multicolumn{4}{c|}{24 bits} & \\
    \hspace{3mm} Digital attenuation\repeatfootnote{attenuator} & \multicolumn{4}{c|}{0.5 dB} & \\
    \thickhline
\end{tabularx}
\end{threeparttable}
\end{table}

\newpage

Phase noise performance of Mirny was tested using an ADF4351 evaluation kit through a DIO-tester\repeatfootnote{mirny_thesis}.
Mirny is then connected to the RSA5100A spectrum analyzer for measurement.

Noise response spike can be improved by inserting a common-mode choke between the power supply and Mirny.
The following is a comparison between 2 setups at 1 GHz output:
\begin{itemize}
    \item Red: Before any modifications
    \item Blue: Adding a CM choke with an 100 \textmu F capacitor after the CM choke
\end{itemize}

\begin{figure}[H]
    \centering
    \includegraphics[height=3in]{mirny_phase_noise_cm_choke.png}
    \caption{Phase noise measurement at 1 GHz}
\end{figure}

Phase noise at different output frequencies are then measured.

\newcolumntype{Y}{>{\centering\arraybackslash}X}

\begin{table}[hbt!]
\centering
\begin{threeparttable}
\caption{Phase noise performance}
\begin{tabularx}{0.8\textwidth}{| c | Y | Y | Y | Y | Y |}
    \thickhline
    \multirow{2}{*}{\textbf{Output frequency}} &
    \multicolumn{5}{c|}{\textbf{Phase noise (dBc/Hz) at carrier offset}}\\
    \cline{2-6} & 1 kHz & 10 kHz & 100 kHz & 1 MHz & 10 MHz \\
    \hline
    125 MHz & -114 & -116 & -115 & -132 & -133 \\
    \hline
    500 MHz & -107 & -129 & -111 & -130 & -132 \\
    \hline
    1 GHz & -102 & -106 & -107 & -125 & -133 \\
    \hline
    2 GHz & -102 & -98 & -104 & -123 & -124 \\
    \hline
    3.5 GHz & -96 & -101 & -103 & -127 & -128 \\
    \thickhline
\end{tabularx}
\end{threeparttable}
\end{table}

\newpage

\begin{figure}[H]
    \centering
    \includegraphics[height=3in]{mirny_phase_noise_frequency.png}
    \caption{Phase noise measurement}
\end{figure}

\newpage

\section{Example ARTIQ code}
The sections below demonstrate simple usage scenarios of the 4456 Synthesizer Mirny card with the ARTIQ control system.
They do not exhaustively demonstrate all the features of the ARTIQ system.
The full documentation for the ARTIQ software and gateware is available at \url{https://m-labs.hk}.

\subsection{1 GHz Sinusoidal Wave}
Generate a 1 GHz sinusoid from RF0 with full scale amplitude, attenuated by 6 dB.
Both the CPLD and the PLL channels should be initialized.

\inputcolorboxminted{firstline=10,lastline=17}{examples/pll.py}

\subsection{ADF5356 Power Control}
Output power can be controlled be configuring the PLL channels individually, in addition to the digital attenuators.
After initialization of the PLL channel (ADF5356), the following line of code can change the output power level.

\inputcolorboxminted{firstline=28,lastline=28}{examples/pll.py}

The parameter corresponds to a specific change of output power according to the following table\repeatfootnote{adf5356}.

\begin{center}
    \captionof{table}{Power changes from ADF5356}
    \begin{tabular}{|c|c|}
    \hline
    Parameter & Power \\ \hline
    0 & -4 dBm \\ \hline
    1 & -1 dBm \\ \hline
    2 & +2 dBm \\ \hline
    3 & +5 dBm \\ \hline
    \end{tabular}
\end{center}

ADF5356 gives +5 dBm by default. The stored parameter in ADF5356 can be read using the folowing line.

\inputcolorboxminted{firstline=29,lastline=29}{examples/pll.py}

\newpage
\subsection{Periodic 100\textmu s pulses}
The output can be toggled on and off periodically using the RF switches.
The following code emits a 100\textmu s pulse in every millisecond.
A microwave signal should be programmed in prior (such as the 1 GHz wave example).

\inputcolorboxminted{firstline=42,lastline=44}{examples/pll.py}

Enabling the datapath to the Almazny mezzanine in the CPLD configuration register will relegate the switch control to CPLD register access.

\section{Ordering Information}
To order, please visit \url{https://m-labs.hk} and select the 4456 Synthesizer Mirny in the ARTIQ Sinara crate configuration tool.
The cards may also be ordered separately by writing to \url{mailto:sales@m-labs.hk}.

\section*{}
\vspace*{\fill}

\begin{footnotesize}
Information furnished by M-Labs Limited is provided in good faith in the hope that it will be useful. However, no responsibility is assumed by M-Labs Limited for its use. Specifications may be subject to change without notice.
\end{footnotesize}

\end{document}