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TAS5631 PWM input

Hello!

I have one TAS5631 and i don't want to drive with digital audio processor (TAS5518).

I want to use this power circuit in stereo mode.

Exist a good  schematics (not processor)  for convert analog audio signal to pwm signal for this TAS5631?

Many thanks .

9 Replies

  • Hi Laurentiu Chitu

    The TAS5631 was designed to be used with PWM modulators like the TAS5508/TAS5518/TAS5086.

    If you just need analog input you should use the TAS5630. The TAS5630 is avaiable in TI's sample program.

     

    If you insist on using the TAS5631 you already have you could use a TPA2016D2 as analog modulator, but you will not get the performance of the TAS5630

     

    rgds,

     

    Kim N Madsen

  • In reply to Kim Nordtorp Madsen:

    Many thanks for this reply !

    Best regards

            Laurentiu Chitu

  • In reply to Laurentiu Chitu:

    If I use tpa2008 as analog modulator is ok ?

     Have a good Signal-to-noise ratio (96db).

    Is necessary to connect  output load to tpa2008 in this case?

    Or I connect  directly to entry (tas5631).

    rgds

     Chitu Laurentiu

     

  • In reply to Laurentiu Chitu:

    Hi, Chitu,

    TPA2008D2 will work as a modulator, just connect the two outputs to the two inputs on the TAS5631. Just make sure you run the TPA2008D2 at 4.2V or less, or you'll damage the input pins on the TAS5631. I'd recommend 3.3V.

    And, you're right, you should add some nominal load to the TPA2008D2 output. Something like a 1 kohm resistor across its outputs should be fine.

    I'd just liked to reiterate what Kim said -- if you want analog input, by far the best way to achieve that is to use TAS5630!

    -d2

    Best regards,

    Don Dapkus

    Gate Driver Applications Engineering Manager

    Dallas, TX USA

  • In reply to Don Dapkus:

    Hi Don!

    Yes I know about TAS 5630 (analog inputs) but I have already the TAS 5631 .

    (sorry I have not said  this before )

    Many Thanks!

    rgds

          Laurentiu Chitu

     

     

  • In reply to Laurentiu Chitu:

    Hi, Chitu,

    May I ask where you got the 5631? Do you have a part, or an EVM?

    What is it you're trying to do? What is your application?

    If you are uncomfortable stating this information on the forum, you may add me as a friend, and then we can take this discussion off the forum.

    -d2

    Best regards,

    Don Dapkus

    Gate Driver Applications Engineering Manager

    Dallas, TX USA

  • In reply to Don Dapkus:

    Hi Don !

    Is not a problem[:)]

    We engineer a colleague (Bucharest) sent me 2 pieces for testing,not EVM (I think is  samples )

    I wanted to test them because I saw on forums only good words for new models of circuit (classD)

    rgds

                       Laurentiu Chitu

  • In reply to Laurentiu Chitu:

    Hi, Chitu,

    If you send me your address (privately), I can see if I can find a couple TAS5630s in the lab for you. It pains me to see people work on non-optimal solutions. I think you will never be able to achieve the same level of performance as the TAS5630.

    -d2

    Best regards,

    Don Dapkus

    Gate Driver Applications Engineering Manager

    Dallas, TX USA

  • In reply to Don Dapkus:

    Don Dapkus

    I think you will never be able to achieve the same level of performance as the TAS5630.

    Hi!

    Are of the same opinion!

    I will send the adress!

    Many thanks for all

    Rgds

     

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