Other Parts Discussed in Thread: OPA625, ADS9110, REF6141
Hi ,
I just read TIDUB85 ( Reference design for 18 bit 2MSPS DAQ ) . particularly the part that is related to voltage reference design is my issue .
Now spouse that I want to use that reference for deriving 4 SAR ADC , Can OPA625 derive 4 ADC , The ADC Vref average current is 100 uA but cause it is average current I don't want to have
concern in worst case situation . I want to reduce the noise as much as possible and try to use the suggested low pass filter on TIDUB85
And don't i need to use another 10uF capacitor close to ADC ref pin as storage capacitor ?
thank you very much