TLC320AD77 Unused Analog Inputs

Jesse Dressler

We have a board that uses the TLC320AD77 CODEC and we decided to not use the analog inputs in a particular configuration. I want to remove the input opamps but not sure what to do with the unused differential analog inputs to this CODEC. The datasheet does not specifically say. Any info would be great. Thanks!

over 10 years ago

0 Justin Bohr over 10 years ago

TI__Mastermind 27990 points

Hi Jesse,

A common suggestion is to ground the pin with a capacitor.

Justin

0 Jesse Dressler over 10 years ago in reply to Justin Bohr

Prodigy 20 points

Thanks for the reply, Justin. Since it is a differential input, do you think a cap between the positive and negative inputs would be sufficient or a cap from each to ground would be better?

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TLC320AD77 Unused Analog Inputs