manissri
Full Member level 5
hi i am desinging the 6 bit flash adc of 1gs/s .
i want to know that is there any t/h cicuit required at the input.
many of papers tell that there is no need of t/h circuit in that type of flash adc in which u r using ur 63 comparators.
as the razavi book on data converters tell that if all comparators are strobbed at same time they collectevly stores the polarity of the difference between vin and vref there by operating as a distributed sample and hold circuit.
so this statement is not clear to me .
plz give ur suggestions..
regards
i want to know that is there any t/h cicuit required at the input.
many of papers tell that there is no need of t/h circuit in that type of flash adc in which u r using ur 63 comparators.
as the razavi book on data converters tell that if all comparators are strobbed at same time they collectevly stores the polarity of the difference between vin and vref there by operating as a distributed sample and hold circuit.
so this statement is not clear to me .
plz give ur suggestions..
regards