OP AMP for PIPELINE ADC?

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wael_wael

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Hi friends
i am designing Pipeline ADC now, and i have important question for OPAMP.
i shoulde use OPAMP in design S/H, and also between the stages.
my question is the OP AMP in S/H and between the stages are same ?
thanx
 

The requirement specifications for the op-amp used in S/H and the MDAC become less and less stringent as we move from first stage to the last stage.

Normally the designers use the same op-amp architecture for SH and MDAC circuits but with different sizes and quiescent current to optimize the op-amps for the stage requirements and to conserve power.
 

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