TAS6424E-Q1: Low volume distortion problem

Alan Xia

Expert 6075 points

Part Number: TAS6424E-Q1
Other Parts Discussed in Thread: TAS6424

Hi team，

My client has a problem with low volume distortion. The detailed test content is in the attachment.

Low volume distortion problem低音量失真问题.docx

9 months ago

0 Yanming Gong 9 months ago

TI__Mastermind 19340 points

Customer test is their systerm test. Did they check TAS6424 audio output noise when SDIN short to GND?

Did they check PVDD power nosie?

Did they check A-weighting noise when mute or SDIN short to GND?

0 Alan Xia 9 months ago in reply to Yanming Gong

TI__Expert 6075 points

Hi Derek，

Update some tests done by customers:
We tried grounding SDIN, but there was still noise;
We used battery power for PVDD, but there is still noise;
When muted, A-weighting noise is about -45dB, and the requirement is -60dB

0 Yanming Gong 9 months ago in reply to Alan Xia

TI__Mastermind 19340 points

Hi Alan

It is not reasonale. Please ask customer to check setup firstly.

They can check EVM board noise firstly.

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TAS6424E-Q1: Low volume distortion problem