TPA6166A2: How much voltage can be allowed to INL/INR in max input?

user6298384

Prodigy 150 points

Part Number: TPA6166A2

Dear TI Team,

How much voltage can be allowed to INL/INR in max input?

This information is needed to decide audio level diagram.

BR,

Matsuda

over 3 years ago

0 Luis Fernando Rodriguez S. over 3 years ago

TI__Guru* 84915 points

Hi, Matsuda,

The INL and INR inputs cannot be higher than VDD. Otherwise, they could cause a device damage.

Best regards,
Luis Fernando Rodríguez S.

0 user6298384 over 3 years ago in reply to Luis Fernando Rodriguez S.

Prodigy 150 points

Hi Luis-san,

Thank you for your answer.

From device safety point of view, I understood your answer.

From headphone amp's performance point of view(THD etc), How much voltage can be allowed to INL/INR in max input?

BR,

Matsuda

0 Luis Fernando Rodriguez S. over 3 years ago in reply to user6298384

TI__Guru* 84915 points

Hi, Matsuda,

The THD level uses to increase when the maximum voltage is reached, having clipping issues. In this device, you should see a lower audio performance if the audio signal peaks are near of GND and VDD levels.

Best regards,
Luis Fernando Rodríguez S.

Audio

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TPA6166A2: How much voltage can be allowed to INL/INR in max input?