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How do I feed a single-ended signal into a differential input?

April 26, 2017Differential feed input signal single-ended

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How do I feed a single-ended signal into a differential input?

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It is possible to drive a differential input with a single-ended clock signal. This is done by AC coupling the single-ended signal into one side of the differential input. The other side of the differential input is connected via a capacitor to a quiet ground. The inputs of the AD951x series of parts are self-biased, so no common mode voltage must be set. The performance of the input is not reduced by coming in single-ended rather than differential.