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Design >> Mixed-Signal Design >> About switched capacitor circuits in flash ADC
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Message started by VINAY RAO on Oct 23^rd, 2009, 1:23am

Title: About switched capacitor circuits in flash ADC
Post by VINAY RAO on Oct 23^rd, 2009, 1:23am

hi,,
whether the usage of switched capacitor circuits in flash ADC's results sampling rate to be decreased?? or it increases its performance in related with sampling rate?

Title: Re: About switched capacitor circuits in flash ADC
Post by raja.cedt on Oct 23^rd, 2009, 8:10am

hi,
could you please explain clearly? i mean where you want to use switch cap..generally preamp before comparator is switch cap based (mainly for offset cancellation)..so this will give inherent sample and hold rather than putting s/h in front of the ADC. but now days people are using again s/h hold in front of the ADC for several improvements.

Thanks,
Rajasekhar.

Title: Re: About switched capacitor circuits in flash ADC
Post by loose-electron on Oct 23^rd, 2009, 7:02pm

Vinay:

There are a number of good textbooks out there on the subject. May I suggest getting a few books and doing some research?

Jerry