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TLV320AIC20: Need a Clarification on CODEC (TLV320AIC20)

Sowmiya annamalai
Prodigy 190 points
Part Number: TLV320AIC20
Other Parts Discussed in Thread: LM3886

Hi,

In our design we have a CODEC (TLV320AIC20) HDSO+/- output connected to an audio power amplifier(LM3886) to drive a 4ohms or 8ohm speaker. This audio power amplifier supply is directly connected to an aircraft DC bus supply i.e 18Vdc to 32.2Vdc with ambient operating temperature conditions as -20 deg C to +55 deg C.

 

  1. We are not clear on how to vary the Signal level on HDSO+/- pins, since in datasheet of CODEC (TLV320AIC20) we couldn’t get the DAC o/p range , resolution calculation for programming it.