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TPA3125D2: Spec check

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Replies: 2

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Part Number: TPA3125D2

Hi Sirs,

We are survey Audio AMP and Codec.

Our spec inquire as below, could you help to suggest suitable solution for us?

Thanks!!

1. Stereo audio AMP should be capable of driving 8 ohm speaker with >= 2 x 10W

2. The stereo audio AMP path should include a high pass filter with cutoff freq of 250Hz +/- 100Hz

3. The stereo audio AMP path should include a low pass filter with cutoff freq of 20kHz +/- 2kHz

4. The stereo audio THD should not exceed 1% (40dB)

5. The stereo audio SNR at 1kHz should be at lease 80 dB

6. Stereo line level should be 2V p-p in load resistor 10K

7. Stereo line level THD should not exceed 1% (40dB) @ 0.316 Vrms (-10 dBV)

8. HDA codec that is compatible with the host audio controller on the Intel chipset

9. Mono channel (LFE pin of the audio codec) should have an AMP capable of driving an 8 ohm speaker with 6W

10. The mono audio AMP path should include a high pass filter with cutoff freq of 75Hz +/- 50Hz

11. The mono audio AMP path should include a low pass filter with cutoff freq of 1kHz +/- 200Hz

12. The mono audio THD at 1kHz should be less than 40dB

13. The mono audio SNR at 1kHz should be greater than 60dB

  • Hello! We recomend that you look at newer parts like the TPA3136 www.ti.com/.../TPA3136D2 , which is an analog input class-D amp. For a mono version please look at the www.ti.com/.../tpa3111d1.pdf. If you need a digital input (I2S) amp, please look at TAS5760 for stereo or TAS5720 for mono.

    thanks, Jeff
  • Hi Shu-Cheng,

    As Jeff mentioned, looks like TPA3136D2 is a good choice as audio AMP. About Codec, you need to post another thread in the forum with 'Codec' in the tiltle, and our Codec expert will answer your any question about it.

    Best regards,

    Shawn Zheng 

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