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Original question:

TLV320DAC3100: TLV320DAC3100IRHBR - power sequence and reset sequencing

TLV320DAC3100: TLV320DAC3100IRHBR

Malgorzata Nogowska
Prodigy 30 points

Part Number: TLV320DAC3100

Tool/software:

Dear TEXAS INSTRUMENTS Team,

In our process has been detected issue with the component 5560050420 - MPN - TLV320DAC3100IRHBT.

Problem concerns measurement of frequency on DAC interface.

 

According with the test specification it should lower than 370kHZ

NOK part with description TI 47K

OK part with description TI 1AI

For this moment problem has been detected on the date code 2427 and 2428

kHZ 

Cross check test has been done, assembly good and bad part confirm problem with component on the product:

 

Good

Bad

307 kHz

371 kHz

371 kHz (after replace)

308 kHz (after replacing)

 

Check the part from other date code, results ok:

1

GRN 1132572116  DC 2140

334 kHZ

2

GRN 1132572116 DC 2151

304 kHZ

3

GRN 1132043874  DC 2432

332 kHZ

 

 

Please provide  data about target for measurement of frequency on DAC interface, we didn’t find any data in the specification.

 

Please send explanation/clarification for the description on the component

 

  • 0
    Prodigy 30 points

    We need urgent feedback regarding  - What are the frequency limits for TLV320DAC3100 on SPKP and SPKM outputs?

  • 0 in reply to Malgorzata Nogowska
    TI__Mastermind 33721 points

    Hello,

    I am trying to understand the question so I can answer it correctly.

    It seems the batch with description TI 47K  with time  code 2427 and 2428 are  NOT okay but  the parts with description TI 1AI  is OK.  This is not a question that I can answer but probably I can find the correct team to look into it.

    This part is an audio DAC so based on datasheet and general audio requirement, we have the following:

    Sample Rates  8-kHz to 192-kHz,  input freq up to 20KHz , Master clock frequency up to  50MHz ,  BCLK  can be calculated from fs and number of channels and its  depth.  So for stereo 32bit and fs of 192k we can calculate the max BCLK 

    BCK=2x32x192k=12.288MHZ

    These clks are valid  regardless of using SPK or HP.

    Regards,

    Arash

  • 0 in reply to Arash Loloee
    Prodigy 30 points

    Dear Arash,

    Thank you for feedback, I will forward the your answer to our Test Enginierr Team.

    Do you have information that was implemented any changes in this component regarding frequency limits? We are receiving this component since 2022 and for this moment wasn't any problem with frequency during the test.

  • 0 in reply to Malgorzata Nogowska
    TI__Mastermind 33721 points

    Hello, I am applications Engineer and do not have visibility to manufacturing  or Fab  changes . Can you send me a clear picture of one  "ok" and one "not Ok" part so I can forward it to the team who can tell us the history/origin  of each part .

    Regards,

    Arash