0 Replies Latest reply on Jul 1, 2010 9:03 PM by wookjin.na

    ADC with PGA input ENOB effect

    wookjin.na

      hi cypress,

         

      I want to know that when low level sensor(uV level, like a strain gauge) input to PGA and ampilfier, then ADC 20bit selection. how much ADC output data has effect the ENOB, SNR etc...?

         

      I know that 20Bit ADC's ENOB is about 18bit. but I think PGA will effect the ENOB on the total system.

         

      blow is my schematic. please check it. thanks