TLV320AIC3206 Headphone amplifier dynamic volume control

Hi Colin,

Welcome to E2E and thank you for your interest in our products.

The volume controls are instantaneous. DAC digital volume control and the headphone amplifiers are not used dynamically since it is a fairly large step. So it is suggested to use them only during initial device configuration or use them in small steps as the note mentions:

"If the headphone amplifier must be placed into 'mute' from the –6.0dB setting, set the device at a gain of –5.0dB first, then place the device into mute".

It's a best practice to follow this recommendations to ensure the better performance.

I hope this helps you. If you still have questions, please let me know.

Best regards,

Luis Fernando Rodríguez S.

Hi Luis, 

Thanks for the information.

So the reason I should avoid dynamic control here is because of step size?

Are there any other possible side affects of using the digital volume control dynamically assuming I don't care that it is instantaneous or about the step size?

BR,

Colin

Hi Colin,

Yes, it is. It is recommended to avoid the dynamic control because a pop may result. Specially when the headphone outputs are configured as differential.

I hope this helps you, if you still have questions, please let me know.

Best regards,

Luis Fernando Rodríguez S.