Performance of the SHA

[Rezerford]

Hello!
I have a question.
How do different parameters of the SHA act with performance of ADC? For example, how switching transient and setteling time affect on parameters of ADC?

 

[jerryzhao]

Your SHA accuracy must be higher than ADC resolution.
Such as Settling error must be lees than +-1/2LSB.

 

[zhangfuquan]

:roll: you just got it

 

[chenmy]

Hi!If you are using a pipeline or cyclic ADC structure,the noise performance of the S/H is the most important to the overall ADC noise performance.that means the KT/C noise as well as the OPAMP noise must be less than the ADC quantization noise.