Q&A AD7781 PCB routing Guideline for Analog inputs

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AD7781 PCB routing Guideline for Analog inputs

RonPeterson on Sep 11, 2015

Is there any specific impedance that should be used on the Differential inputs on the AD7781 ADC.

Also is their any requirement for differential impedance.

Thanks

0 JellenieR

on Sep 13, 2015 7:58 PM over 5 years ago
Hi, Ron.

As mentioned in the datasheet, AD7781 differential input channel feeds into high impedance input stage of the amplifier. Thus, the input can tolerate any significant source impedances. You can also refer to the EVAL-AD7781 schematic and layout. Please see link below for details.

http://www.analog.com/media/en/technical-documentation/user-guides/UG-079.pdf

Thanks,

Jelle
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0 ezadmin

on Aug 2, 2018 3:11 PM over 2 years ago
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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