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ADC with really "True differential input"

Question asked by vlad8016 on Nov 18, 2015
Latest reply on Nov 21, 2015 by KRZ

Hi collegues.

 

I need ADC with really differential input and single supply.

-IN connected to reference point (REF/2)

+IN connected to input signal (+\- 2.5v)

 

I tried AD7684 but DataSheet tells that +IN and -IN MUST be in opposite phase to reference point. I used MCP3301 which is pin2pin compatible with AD7684 but allow any signals on inputs.

 

Now we need 500kS ADC and MCP3301 couldn`t achieve this.

Could you advice ADC or solution for AD7693 to adapt it to described use case.

 

Thank you in advance.

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