AD7781 PCB routing Guideline for Analog inputs

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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