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SIS3316-250
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16 channel 250 MSPS 14bit
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`Specifications/Documentation:  <http://www.struck.de/sis3316.html>`

Overview 

.. image:: sis3316blockweb.png

Some characteristics (measured with our board)
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Test-Setup
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.. uml::

   @startuml

   sprite $Process [16x16/16] {
     FFFFFFFFFFFFFFFF
     FFFFFFFFFFFFFFFF
     FFFFFFFFFFFFFFFF
     FFFFFFFFFFFFFFFF
     FFFFFFFFFF0FFFFF
     FFFFFFFFFF00FFFF
     FF00000000000FFF
     FF000000000000FF
     FF00000000000FFF
     FFFFFFFFFF00FFFF
     FFFFFFFFFF0FFFFF
     FFFFFFFFFFFFFFFF
     FFFFFFFFFFFFFFFF
     FFFFFFFFFFFFFFFF
     FFFFFFFFFFFFFFFF
   }
   rectangle "Testsetup" <<$Process>> {
     rectangle "Pure sinewave\ngenerator with low\nnoise and low distortion\n\nRhode & Schwarz SML02" <<$Process>> as src
     rectangle "Sharp-edged low-pass filter\nwith cut-off frequency at\n110% of test frequency.\ntest frequency =9,28 MHz\n TTE LC7 series\nLC7R-11M-50-69B" <<$Process>> as tgt1
     rectangle "SIS3316/14Bit/250MSPS" <<$Process>> as tgt2
     rectangle "Matlab Analyzing\nLinux System" <<$Process>> as tgt3
     src -> tgt1 
     tgt1 -> tgt2
     tgt2 -> tgt3
   }
   @enduml


.. table:: Test results
   
   =========================================  =================  =========  ===============  ================
   Input Voltage/Full Scale/125MHz Bandwidth  SNR/dB at 9.28MHz  ENOB/bits  Input Freq./MHz  Sample Freq./MHz
   =========================================  =================  =========  ===============  ================
   5V                                         69.68              11.28      9.28             125
   2V                                         67.65              10.94      9.28             125
   =========================================  =================  =========  ===============  ================

SNR
...
**Signal-to-noise ratio**\ (abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise. [#f1] 

ENOB
....
**Effective number of bits**\ (ENOB) is a measure of the dynamic performance of an analog-to-digital converter (ADC) and its associated circuitry. The resolution of an ADC is specified by the number of bits used to represent the analog value, in principle giving 2N signal levels for an N-bit signal. However, all real ADC circuits introduce noise and distortion. ENOB specifies the resolution of an ideal ADC circuit that would have the same resolution as the circuit under consideration.

ENOB is also used as a quality measure for other blocks such as sample-and-hold amplifiers. This way, analog blocks can be easily included in signal-chain calculations as the total ENOB of a chain of blocks is usually below the ENOB of the worst block. [#f2]


.. rubric:: Footnotes

.. [#f1] `https://en.wikipedia.org/wiki/Signal-to-noise_ratio` 
.. [#f2] `https://en.wikipedia.org/wiki/Effective_number_of_bits`