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TLV320AIC3254 Gain Stage

Keith Keller
Expert 6240 points
Other Parts Discussed in Thread: TLV320AIC3254

Hello,

Our customer is using the TLV320AIC3254 codec.

Regarding the MicPGA Gaining on input to the ADCs, does the gain occur before or after the signals are combined? 

Thank you, Keith

  • 0
    TI__Guru* 84915 points
    Hi, Keith,

    The PGA gain is applied after the differential signals are combined. Each analog input will have an individual gain determined by the input resistor (10k, 20k, 40k). Then, differential signals will be combined. Finally, the PGA gain will be applied.

    Best regards,
    Luis Fernando Rodríguez S.