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TPA2012D2: Not getting output at TPA2012D2RTJR

Abhineet Ranjan
Intellectual 450 points
Part Number: TPA2012D2
Other Parts Discussed in Thread: AM62A3

Hello Ti,
I am using audio codec (TLV320AIC3106IRGZT) with  TPA2012D2RTJR as amplifier, I am getting output of audio codec to INR+- and INL+- but not getting any audio at speaker connected at OUTR+- and OUTL+-. Please find the attached schematic, (We are getting proper input and output from MIC and HPLOUT,HPROUT)

Processor: AM62A3

Changes I did:

G0/G1= pull down

AUD_SHT_SDR# pulled up
AUD_SHT_SDL# pulled up




C206/C207 removed.
R190,R191,R193,R194 replaced with 1uF capacitor

  • +1
    TI__Guru** 100965 points

    Hi Abhineet,

    A few questions to help with debug:

    • Have you tried removing the capacitors at the output? C194, C197, C198, C199.
    • If you check the outputs with an oscilloscope, do you see the Class-D switching or is there no signal at all?
      • You may try this with and without a load connected?
      • What is the load impedance you're using?

    Best regards,
    -Ivan Salazar
    Applications Engineer