Is there a specification for the AD8676 input resistance? The data sheet does not have one that I can find.
The data sheet for AD8675 (single vs. AD8676's dual package) has input capacitance, but no input resistance.
Thanks for any help.
Thank you for considering ADI products on your applications. Both the AD8675 and AD8676 has an input impedance of around 1 Gohm.
Thanks for the answer. Since I posted my question, we performed a measurement of sorts, using the amplifier to measure resistance in a stimulus/response circuit. We found that the measured resistance levels off at about 1 Gohm, consistent with the input impedance you quote.