AD8476 - Single-ended to differential conversion

Document created by analog-archivist Employee on Feb 23, 2016
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I am using AD8476 for single-ended to differential conversion and my sensor
output resistance is causing gain error and common-mode rejection error.
Is there anything I can do to add high input impedance to my single-ended to
differential conversion stage with AD8476?

 

In order to achieve high input impedance, a precision op-amp, such as the
OP1177, can be used to buffer the input voltage. Further improvements can be
achieved by placing AD8476 within the feedback loop of the op-amp. For more
information, consult the following article:
http://www.analog.com/library/analogDialogue/archives/46-10/single_ended_to_diff
erential.pdf

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