Other Parts Discussed in Thread: TLV320AIC3100
Dear Team,
hello, I am reviewing the TLV320AIC3100 product for the purpose of replacing the audio chip I was using.
The circuit is already written, and I must have to replace it with a pin-to-pin products.
However, there are currently some restrictions.
First, it does not use Mic Bias pins. However, I want to input a microphone signal to the Line input pin.
It seems that you need a bias circuit for the purpose of amplifying the microphone signal from the outside. I would like to ask if there is a reference circuits.
(The microphone uses two types: a condenser microphone without power and a stand-type microphone powered by batteries.)
Second, when setting DC bias with an external circuit, is it okay to apply a bias voltage to the NPN CE amplifier using BJT? (DC current transfer ratio=Max.390)
Third, when configuring an external circuit, can the bias level be configured as 1.35V to 2.35V , 5mA like Electrical Characteristics of Bias pin?
Finally, is there any way to apply a bias only by modifying the internal registers?
Thank you.
