DAC5652A: Clock signal accept after SLEEP mode

NAOKI AOYAMA

Guru 11215 points

Part Number: DAC5652A

Hello,

Our customer use the DAC5652A, have a question.

How long does it take to accept the clock signal after the SLEEP pin High to Low?

Best Regards,

Naoki Aoyama

over 5 years ago

0 jim s over 5 years ago

TI__Guru* 91947 points

Naokiu,

We are looking into this.

Regards,

Jim

0 NAOKI AOYAMA over 5 years ago in reply to jim s

Guru 11215 points

Hello Jim,

Thank you for your reply.
I will wait for your answer.

Regards,
Naoki Aoyama

0 jim s over 5 years ago

TI__Guru* 91947 points

Naoki,

With the clock already present to the DAC, after sleep goes from high to low, the output was valid after one clock cycle.

Regards,

Jim

0 NAOKI AOYAMA over 5 years ago in reply to jim s

Guru 11215 points

Hello Jim,

Thank you for your reply.

Sorry for my poor explanation.

I attach the file that written the question.

DAC5652A_sleep_to_clock.pptx

Could you tell me the answer?

Best Regards,

Naoki Aoyama

0 jim s over 5 years ago in reply to NAOKI AOYAMA

TI__Guru* 91947 points

Naoki,

Please attached photo of a screen shot of the test results. The scope was set to 20us/div. On the photo you will see the clock, the DAC output and the sleep signal.

Regards,

Jim

0 jim s over 5 years ago in reply to jim s

TI__Guru* 91947 points

Naoki,

One thing I forgot to point out is the clock shown in the photo is actually an inverted version of the clock going to the DAC.

Regards,

Jim

0 NAOKI AOYAMA over 5 years ago in reply to jim s

Guru 11215 points

Hello Jim,

Thank you for your reply, evaluation.

Why is the wave form of the DAC output bent?
What did you set the input code?

Best Regards,
Naoki Aoyama

0 jim s over 5 years ago in reply to NAOKI AOYAMA

TI__Guru* 91947 points

Naoki,

I sent a sign wave but it was in two's complement format instead of unsigned binary.

Jim

0 NAOKI AOYAMA over 5 years ago in reply to jim s

Guru 11215 points

Hello Jim,

Thank you for your reply.
I see it was a sine wave.
If the customer have a new question, I will ask you again.

Thanks,
Naoki Aoyama

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DAC5652A: Clock signal accept after SLEEP mode