LM4902: Time to audio output.

Kengo.Y

Part Number: LM4902
Other Parts Discussed in Thread: LM4990, LM4890

Hi team,

I'd like to know your answer about each of LM4902, LM4890, and LM4990.

How long does it take to output after wake up from the shutdown mode?
*There is always an input signal while there is VDD.
Also, can I control this time?

Sincerely.
Kengo.

over 3 years ago

0 Justin Beigel over 3 years ago

TI__Mastermind 18545 points

Hello Kengo,

I am double checking with my colleague but will have an answer for you tomorrow.

Best Regards,

Justin Beigel

0 Kengo.Y over 3 years ago in reply to Justin Beigel

Guru 10615 points

Hi Justin,

Thank you for your reply.
I'll wait for your answer.

Sincerely,
Kengo.

0 Justin Beigel over 3 years ago in reply to Kengo.Y

TI__Mastermind 18545 points

Hello,

The LM4990 and LM4890 wake up times varies per supply voltage but has the information in the datasheets (parameter T_WU in the electrical characterizations).

This time is based on the device and is not controllable.

I am still looking into the LM4902 timing for you but should have an answer soon.

Best Regards,

Justin Beigel

0 Kengo.Y over 3 years ago in reply to Justin Beigel

Guru 10615 points

Hi Justin,

Could you tell me your answer for LM4902 as soon as possible?

Sincerely.
Kengo.

+1 Ivan Salazar over 3 years ago in reply to Kengo.Y

TI__Guru** 100135 points

Hi Kengo,

Unfortunately there is no spec data on the wake up time for LM4902, and since this is a legacy device there is no design data we can reach out at this point. I would expect a similar time to LM4990 around 100ms.

Best regards,
-Ivan Salazar
Applications Engineer

Audio

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LM4902: Time to audio output.