TLV320AIC3262: MICBIAS pin status when the pin is Power Down

takishin

Expert 2360 points

Part Number: TLV320AIC3262

Hi,

I have a question about TLV320AIC3262.

When MICBIAS and MICBIAS_EXT are Power Down, the output pins are Hi-Z?
Or GND?

Thank you in advance.

Best regards,
Takishin

over 8 years ago

0 Luis Fernando Rodriguez S. over 8 years ago

TI__Guru* 84915 points

Hi, Takishin,

The MICBIAS pins are in HI-Z when they are powered down. Actually there's a switch inside that determines the MICBIAS voltage. When the MICBIAS pins are disabled, this switch is just disconnected. Please take a look at the following article for more details:

e2e.ti.com/.../1088.should-i-connect-a-capacitor-to-a-micbias-pin-what-should-i-do-about-noise

Best regards,
Luis Fernando Rodríguez S.

0 takishin over 8 years ago in reply to Luis Fernando Rodriguez S.

Expert 2360 points

Hi Luis,

Thank you for your answer.
I understand.

Best regards,
Takishin

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TLV320AIC3262: MICBIAS pin status when the pin is Power Down