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Is it possible to use voltage attenuator AD8275 for driving 24 bit ADC ADS1220, without adding input Op-amp buffer?

Question asked by aswathyka on Oct 6, 2016
Latest reply on Jan 12, 2017 by ngray

I want to use AD8275 for attenuating the output from sensors varying from -10V to +10V, before giving to ADC.

 

Is AD8275 meant to use only for driving 16 bit successive approximation ADC? Is it possible to use AD8275 for driving 24-bit ADS1220, which is having sigma delta architecture?

 

Also, Can we use AD8275 without adding op-amp buffer at the input side? In which all system conditions, would you recommend to use input op-amp buffer?

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