AD7718 R-C Filtering on AIN/REF inputs

Hi,

I'm using the AD7718 ADC and I'm not sure the best way to filter the AIN inputs, REF+ inputs and AVDD/DVDD inputs. My issue is that I'm going to be using both Single Ended and Differential type sensors but I need to have the flexibility of using either/or on any input. So, I'm not sure the best way to apply and RC Filter, if any. Same question about the REFIN+ input. The attached diagram shows essentially what types of sensors I'm dealing with and the voltages. I was thinking of keeping it simple and just putting a 1k resistor on each AIN input followed by a 0.1uF cap to ground, but my concern was that the caps will be mismatched creating issues for the differential inputs. Any help is much appreciated.

AD7718RC.pdf
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    •  Analog Employees 
    on Aug 2, 2018 4:02 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

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    EZ Admin
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  • 0
    •  Analog Employees 
    on Aug 2, 2018 4:02 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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