TLV320AIC3120: Class-D SPEAKER OUTPUT voltage variation II

Kazuhiko Hirano

Part Number: TLV320AIC3120

Hello,

My customer would like to know how much the 1-sigma is for the following two typical Vrms values respectively.

Best regards,

K.Hirano

over 1 year ago

0 Jeff McPherson over 1 year ago

TI__Mastermind 26235 points

Hi Hirano-san,

We don't collect that data at these conditions, (-6dB gain, 0dBFS) but our test engineers believe sigma to be ~50mV based on other test data.

Best regards,

Jeff McPherson

0 Kazuhiko Hirano over 1 year ago in reply to Jeff McPherson

TI__Genius 12263 points

Jeff,

Thank you for your response.

Let me confirm ATE test cnditions.
At ATE, under what conditions is “DAC OUTPUT to CLASS-D SPEAKER OUTPUT (Vrms) tested?
What is typical value and what is one sigma?

Best regards,

K.Hirano

0 Jeff McPherson over 1 year ago in reply to Kazuhiko Hirano

TI__Mastermind 26235 points

Hi Kazuhiko,

The 50mV is the sigma for the ATE conditions, but I am checking with our testing team to find out exactly what those conditions are.

Thanks for your patience,
Jeff McPherson

0 Kazuhiko Hirano over 1 year ago in reply to Jeff McPherson

TI__Genius 12263 points

Jeff,

Thank you for your response.
I look forward to receiving the exact ATE test conditions.

Anyway, 50mV means 50mVrms?

Bestregards,

K.Hirano

0 Jeff McPherson over 1 year ago in reply to Kazuhiko Hirano

TI__Mastermind 26235 points

Hi Hirano-san,

Yes 50mVrms, sorry for the typo.

0 Jeff McPherson over 1 year ago in reply to Kazuhiko Hirano

TI__Mastermind 26235 points

Hi Hirano-san,

While we don't test ATE at the exact specs we did find bench validation data that shows a sigma of ~12mVrms at the conditions listed in the datasheet. You can rely on this number instead of the ~50mVrms we approximated earlier.

Best regards,
Jeff McPherson

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TLV320AIC3120: Class-D SPEAKER OUTPUT voltage variation II