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Analog Input Structure of ADAU1761

Question asked by marcelb on Oct 30, 2016
Latest reply on Nov 1, 2016 by marcelb

What is the input/protection structure of the LINP/LINN/RINP/RINN/LAUX/RAUX pins of the ADAU1761? Are clamping diodes integrated? If so, what sort of current can they be subjected to? Do I need external diode clamps?


Also, what is the input impedance of the above pins? The datasheet lists it in terms of the PGA gain, but what if I'm not using the PGAs? And what about LAUX/RAUX?