This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TLV320AIC34: analogue input

Part Number: TLV320AIC34

Hello,

Does the TLV320AIC34 chip require external half rail bias on the microphone analogue inputs such as LINE1LP_A and LINE1LM_A to ensure symmetrical signals are between -0.3V and 3.3V?

The reason I ask is that for example LINE1LP_A has a minimum voltage of -0.3V w.r.t. Vss, then later on in the datasheet recommends a differential signal excitation of 1.414Vrms, which would produce single ended signals that go below -0.3V. but yet I see no other example of this chip with analogue input biasing (except for powering mics) in the datasheet or any other examples I have spotted.

Best regards

Henry Frankland