227 lines
7.2 KiB
TeX
227 lines
7.2 KiB
TeX
\documentclass[10pt]{datasheet}
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\usepackage{palatino}
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\usepackage{textgreek}
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\usepackage{minted}
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\usepackage{tcolorbox}
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\usepackage{etoolbox}
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\BeforeBeginEnvironment{minted}{\begin{tcolorbox}[colback=white]}%
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\AfterEndEnvironment{minted}{\end{tcolorbox}}%
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\usepackage[utf8]{inputenc}
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\usepackage[english]{babel}
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\usepackage[english]{isodate}
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\usepackage{graphicx}
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\usepackage{tikz}
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\usepackage{pgfplots}
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\usepackage{circuitikz}
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\usetikzlibrary{calc}
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\title{2128 SMA-TTL}
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\author{M-Labs Limited}
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\date{July 2021}
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\revision{Revision 1}
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\companylogo{\includegraphics[height=0.73in]{artiq_sinara.pdf}}
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\begin{document}
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\maketitle
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\section{Features}
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\begin{itemize}
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\item{8 channels.}
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\item{Input and output capable.}
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\item{Galvanically isolated.}
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\item{3ns minimum pulse width.}
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\item{SMA connectors.}
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\end{itemize}
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\section{Applications}
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\begin{itemize}
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\item{Photon counting.}
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\item{External equipment trigger.}
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\item{Optical shutter control.}
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\end{itemize}
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\section{General Description}
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The 2128 SMA-TTL card is a 4hp EEM module part of the ARTIQ Sinara family.
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It adds general-purpose digital I/O capabilities to carrier cards such as 1124 Kasli and 1125 Kasli-SoC.
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It provides two banks of four digital channels each, with SMA connectors.
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Each bank has individual ground isolation.
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The direction (input or output) of each bank can be selected using DIP switches.
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Each channel supports 50\textOmega~terminations individually controllable using DIP switches.
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Outputs tolerate short circuits indefinitely.
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The card support a minimum pulse width of 3ns.
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% Switch to next column
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\vfill\break
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\begin{figure}[h]
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\begin{circuitikz}[european]
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\node[op amp] (amp1) {};
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\node[op amp, below = 0.5cm, xscale = -1] (amp2) {};
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\draw (amp1.out) |- (amp2.-);
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\draw (amp2.-) ++(0, 0.3cm) node[circ]{} to +(2,0) node[above left]{5};
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\draw (amp2.out) to (amp1.+);
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\draw (amp1.+) ++(0, -0.3cm) node[circ]{} to +(-2,0) node[above right]{2};
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\draw (amp1.-) to +(-2,0) node[above right]{1};
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\draw (amp2.+) to +(2,0) node[above left]{4};
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\draw (amp1.out) +(0,0.5cm) node (Vdd) {$\mathrm{V_{DD}}$};
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\draw (Vdd.east) to +(1.5,0) node [above left]{6};
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\draw (amp2.out) +(0,-0.5cm) node (Vss) {$\mathrm{V_{SS}}$};
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\draw (Vss.west) to +(-1.6,0) node [above right]{3};
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\draw ($(amp1.north west) + (-0.5,0.5)$) rectangle ($(amp2.south west) + (0.5,-0.5)$);
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\end{circuitikz}
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\caption{Block diagram (TODO)}
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\end{figure}
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\begin{figure}[h]
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\includegraphics[width=1.5in]{photo2128.jpg}
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\caption{Card photo}
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\end{figure}
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% For wide tables, a single column layout is better. It can be switched
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% page-by-page.
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\onecolumn
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\section{Electrical Specifications}
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All specifications are in $0\degree C \leq T_A \leq 70\degree C$ unless otherwise noted.
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\begin{table}[h]
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\begin{threeparttable}
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\caption{Recommended Operating Conditions}
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\begin{tabularx}{\textwidth}{l | c | c c c | c | X}
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\thickhline
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\textbf{Parameter} & \textbf{Symbol} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
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\textbf{Unit} & \textbf{Conditions} \\
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\hline
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High-level input voltage & $V_{IH}$ & 2 & & & V & \\
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\hline
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Low-level input voltage & $V_{IL}$ & & & 0.8 & V & \\
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\hline
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Input clamp current & $I_{OH}$ & & & -18 & mA & termination disabled \\
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\hline
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High-level output current & $I_{OH}$ & & & -160 & mA & \\
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\hline
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Low-level output current & $I_{OL}$ & & & 376 & mA & \\
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\thickhline
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\end{tabularx}
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\end{threeparttable}
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\end{table}
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\begin{table}[h]
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\begin{threeparttable}
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\caption{Electrical Characteristics}
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\begin{tabularx}{\textwidth}{l | c | c c c | c | X}
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\thickhline
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\textbf{Parameter} & \textbf{Symbol} & \textbf{Min.} & \textbf{Typ.} & \textbf{Max.} &
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\textbf{Unit} & \textbf{Conditions} \\
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\hline
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High-level output voltage & $V_{OH}$ & 2 & & & V & $I_{OH}$=-160mA \\
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& & 2.7 & & & V & $I_{OH}$=-6mA \\
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\hline
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Low-level output voltage & $V_{OL}$ & & 0.42 & 0.55 & V & $I_{OL}$=188mA \\
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& & & & 0.7 & V & $I_{OL}$=376mA \\
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\hline
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Pulse width distortion & $PWD$ & & 0.2 & 4.5 & ns & \\
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\hline
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Peak jitter & $T_{JIT(PK)}$ & & 350 & & ps & \\
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\thickhline
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\end{tabularx}
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\end{threeparttable}
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\end{table}
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\section{Example ARTIQ code}
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The sections below demonstrate simple usage scenarios of the 2128 SMA-TTL card with the ARTIQ control system.
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They do not exhaustively demonstrate all the features of the ARTIQ system.
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The full documentation for the ARTIQ software and gateware is available at \url{https://m-labs.hk}.
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Timing accuracy in the examples below is well under 1 nanosecond thanks to the ARTIQ RTIO system.
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\subsection{One pulse per second}
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The channel should be configured as output in both the gateware and hardware.
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\begin{minted}{python}
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@kernel
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def run(self):
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self.core.reset()
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while True:
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self.ttl0.pulse(500*ms)
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delay(500*ms)
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\end{minted}
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\subsection{Morse code}
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This example demonstrates some basic algorithmic features of the ARTIQ-Python language.
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\begin{minted}{python}
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def prepare(self):
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# As of ARTIQ-6, the ARTIQ compiler has limited string handling
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# capabilities, so we pass a list of integers instead.
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message = ".- .-. - .. --.-"
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self.commands = [{".": 1, "-": 2, " ": 3}[c] for c in message]
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@kernel
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def run(self):
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self.core.reset()
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for cmd in self.commands:
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if cmd == 1:
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self.led.pulse(100*ms)
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delay(100*ms)
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if cmd == 2:
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self.led.pulse(300*ms)
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delay(100*ms)
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if cmd == 3:
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delay(700*ms)
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\end{minted}
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\subsection{Counting rising edges in a 1ms window}
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The channel should be configured as input in both the gateware and hardware.
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\begin{minted}{python}
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@kernel
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def run(self):
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self.core.reset()
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gate_end_mu = self.ttl0.gate_rising(1*ms)
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counts = self.ttl0.count()
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print(counts)
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\end{minted}
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This example code uses the software counter, which has a maximum count rate of approximately 1 million events per second.
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If the gateware counter is enabled on the TTL channel, it can typically count up to 125 million events per second:
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\begin{minted}{python}
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@kernel
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def run(self):
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self.core.reset()
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self.edgecounter0.gate_rising(1*ms)
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counts = self.edgecounter0.fetch_count()
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print(counts)
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\end{minted}
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\subsection{Responding to an external trigger}
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One channel needs to be configured as input, and the other as output.
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\begin{minted}{python}
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@kernel
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def run(self):
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self.core.reset()
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self.ttlin.gate_rising(5*ms)
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timestamp_mu = self.ttlin.timestamp_mu()
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at_mu(timestamp_mu + self.core.seconds_to_mu(10*ms))
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self.ttlout.pulse(1*us)
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\end{minted}
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\section{Ordering Information}
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To order, please visit \url{https://m-labs.hk} and select the 2128 SMA-TTL in the ARTIQ Sinara crate configuration tool. The card may also be ordered separately by writing to \url{mailto:sales@m-labs.hk}.
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\section*{}
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\vspace*{\fill}
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\begin{footnotesize}
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Information furnished by M-Labs Limited is believed to be accurate and reliable. However, no responsibility is assumed by M-Labs Limited for its use, nor for any infringements of patents or other rights of third parties that may result from its use.
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Specifications subject to change without notice.
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\end{footnotesize}
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\end{document}
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