carlgrace
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I'm a bit confused about choosing caps based on mismatch data. Say, for instance, that the process I'm using claims I need 1.2 pF of capacitance for a three-sigma mismatch of 0.1% (I'm trying to build a 10-bit ADC). Now, does that mean both the sampling and feedback cap need to be 1.2 pF to get this matching, or is the total capacitance I'm sampling with (two caps) need to be 1.2 pF so each cap can be 600 fF? The design manual is not clear about this.
Carl
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