TPA3131D2: MONO config, can output floating?

[FAE] Andrew Wang

Genius 10685 points

Part Number: TPA3131D2

Hi Team,

Customer only need one channel from TPA3131, can we float the output pins?

(BSPL/ BSNL/ OUTPL / OUTNL)

And short INNL and INPL directly to the GND.

Anything else needs to do?

Thanks!

Andrew

0 Yanming Gong over 4 years ago

Hi Andrew,

Unused audio should be connected to GND through DC caps, them can not be short to GND directly.

For unused channel, BST pins should add boost capacitors; OUT pins can be floating.

Regards,

Derek

0 [FAE] Andrew Wang over 4 years ago in reply to Yanming Gong

Hi Derek,

Yes for quick feedback.

Quick confirm, for unused channel, we connect input through cap, but for MONO connection, we short the input directly to ground, correct?

Thanks!

Andrew

0 Yanming Gong over 4 years ago in reply to [FAE] Andrew Wang

Hi Andrew,

For Mono design, please refer Figure 28 in datasheet.

Thanks!

Regards,

Derek

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