PCM6240-Q1: MICBIAS accuracy

Shinji Tsuji

Genius 12378 points

Part Number: PCM6240-Q1

Hi team,

Could you advise the accuracy (tolerance) of the MICBIAS at 9V?

Load regulation is specified at max 1%, but I would like to know the accuracy.

regards,

over 3 years ago

0 Zak Kaye over 3 years ago

TI__Mastermind 23050 points

Hi Shinji-san,

I don't believe we have any specs for the accuracy outside of the load regulation. Generally a MIC bias is not required to be extremely accurate, is there a use case you have in mind that requires this?

Best,

Zak

0 Shinji Tsuji over 3 years ago in reply to Zak Kaye

TI__Genius 12378 points

Hi Zak,

I would like to know the accuracy(tolerance) to know the range of input overvoltage detection voltage.

Since it is referred to MICBIAS voltage, I would like to know its tolerance.

regards,

0 Zak Kaye over 3 years ago in reply to Shinji Tsuji

TI__Mastermind 23050 points

Hi Shinji-san,

The accuracy of MICBIAS is much better than the threshold settings so this should not be a major concern. This is also dependent on the actual MICBIAS setting used and we don't have any specs for this, but as a worst case estimate I would expect the MICBIAS to be within 20mV of the set voltage.

Best,

Zak

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PCM6240-Q1: MICBIAS accuracy