SAR ADC offset cancellation

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nijMcnij

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offset cancellation

hello all,

i am in the process of designing a 10 bit SAR ADC, i was wondering if offset cancellation would be essential in this design and if so which approach is the best?

LSB = 1.6mV

many thanks
 

I really do not understand why do you need offset calculation because you will use a single comparator in a SAR ADC. Designing the comparator so that it has less input referred offset will take care of a lot of problems. Try to design a Preamp and a latch type.
 

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