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Design >> Mixed-Signal Design >> subsampling ADC sample and hold
https://designers-guide.org/forum/YaBB.pl?num=1222678519

Message started by rf_jay on Sep 29^th, 2008, 1:55am

Title: subsampling ADC sample and hold
Post by rf_jay on Sep 29^th, 2008, 1:55am

How to measure the closed loop gain of S/H amplifier

This is used for subsampling ADC.

What I have done is, simulated S/H circuit like a RF Mixer circuit. I did PSS and PSP analysis. I am not getting proper results for conversion gain.

any advice would be very useful.

Thanks in advice.
JT.

Title: Re: subsampling ADC sample and hold
Post by Cri Azzolini on Oct 3^rd, 2008, 2:21am

Hi JT,

did you try PAC analysis?
If you consider the S/H as a black box and perform a PSS/PAC analysis, the Bode's plot should show the closed loop gain in the sideband of interest.

Bye,
Cri