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Help with fully differential SC comparator

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gsuarez

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I need help/info on a fully differential SC comparator. It compares two sets of signals (Vin+, Vin-, and Vref+,Vref-). The architecture consists of 4 preamps (gain ~ 4) + latch. I want to have stages 1 and 2 together with Output offset storage and stages 3 and 4 together with Input offset storage. I'm needing help with the offset cancellation topology, the timing of the switches, and fully differential SC sampling. Any help is appreciated. Thanks

gsm
 

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