TPA2011D1: EN Pop Noise

Kazuki Itoh

Genius 11000 points

Part Number: TPA2011D1
Other Parts Discussed in Thread: TPA2034D1, TPA2037D1

Hello team,

My customer concerns about TPA2011D1 EN pop noise.

I don't find any specific description regarding the pop noise except for the introduction of the first page on the D/S.

Does the fast start up time help to reduce the EN pop noise?

Or, does TI have any other device with pop noise suppression feature?

Regards,

Itoh

over 4 years ago

0 Luis Fernando Rodriguez S. over 4 years ago

TI__Guru* 84915 points

Hi, Itoh-san,

Usually, the pop issues in this device are associated to the capacitance values on the TPA2011D1 circuit and the impedance difference at the inputs. Do you have the customer schematic in order to verify if we can suggest some modifications?

The most part of our analog amplifiers don't have a pop suppression circuit since the pop issues are associated to the external components. However, I can suggest some alternatives such the TPA2034D1 or TPA2037D1.

Best regards,
Luis Fernando Rodríguez S.

0 Kazuki Itoh over 4 years ago in reply to Luis Fernando Rodriguez S.

TI__Genius 11000 points

Hello Luis-san,

No, my customer is trying to pick up parts.

Does TPA2034D1 or TPA2037D1 you mentioned have pop noise suppression circuit inside?

Regards,

Itoh

0 Luis Fernando Rodriguez S. over 4 years ago in reply to Kazuki Itoh

TI__Guru* 84915 points

Hi, Itoh-san,

The devices that I mentioned are just alternative parts but they don't support noise suppression circuit inside.

We don't have Class-D amplifiers with integrated pop suppression block. There are just headphone amplifiers with this fixed or configurable pop suppression feature.

Our Class-D amplifiers with analog input don't have pop suppression algorithm since the output are differential. The common noise or pop is removed by the outputs difference.

Best regards,
Luis Fernando Rodríguez S.

0 Kazuki Itoh over 4 years ago in reply to Luis Fernando Rodriguez S.

TI__Genius 11000 points

Hello Luis-san,

Thank you, I understood.

Itoh

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TPA2011D1: EN Pop Noise