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TAS56xx single ended mode and hook up

Bruce52209
Prodigy 240 points
Other Parts Discussed in Thread: TAS5613

I want to drive the TAS5613 with a stereo single ended source.

1.  How do I connect the two single ended channel outputs to the TAS5613 differential inputs (and what mode should I use)?

2.  One of the Modes (100) accepts analog inputs as single ended (4 x SE).  What is this mode for?  Is it useful for single ended stereo audio (full H bridge output)?

 

Thanks,

Bruce

  • 0
    TI__Mastermind 18510 points

    Bruce, use the source ground as one side of each differential input to TAS5613.  Connect each differential input between source ground and source Left or Right output.  Remember, though, that during turn-on you will have to delay enabling TAS5613 until your single ended source output has stabilized, or you will generate a pop.  Similarly, on turn-off, disable TAS5613 before you power the source down.  You can do this in any mode that provides a differential input.

    If your source has a common-mode or system ground to TAS5613 ground, you probably will not want to make any other connection between source ground and TAS5613 ground - if you do, you will introduce a ground loop, and it may cause some sort of interference.  If there is no common-mode or system ground between source ground and TAS5613 ground, you will need to tie the source ground to TAS5613 input ground.  You may need to experiment with this to get the correct connection.

    Mode 100, 4 x SE, is provided for implementing 4.1 systems and the like.  In this mode, inputs A/B/C/D operate as 4 SE inputs to outputs A/B/C/D.  Each of the outputs operates as a half bridge rather than full bridge.  Each output requires a large DC blocking cap to the load.

    (Similarly, Mode 011, 1 x BTL + 2 x SE, is provided for 2.1 systems.)

    Best regards,

    Steve.

     

  • 0 in reply to SteveCrump
    Prodigy 240 points

    Thanks for the explanation.

    -Bruce