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TAS5760 eval board

Other Parts Discussed in Thread: TAS5760MD

How does PBTL mode work? Is it safe to short OUTA+/OUTA- together? Does it matter that there are two inductors?

This is specifically in regards to the eval board. Manual says it supports PBTL mode but there are no jumpers on the output stage.

  • Hi, John,

    Welcome to e2e, and thanks for your interest in our devices.

    Please review the section titled "Parallel Bridge Tied Load Mode Select (PBTL/SCL Pin)" in the TAS5760MD data sheet on page 37. Let me know if you have questions after you review this.

    -d2

  • I see how to program the chip into PBTL mode. But what is the correct way to connect the speaker? On page 51 of the datasheet it shows the output configuration for software PBTL mode.

    Now compare to the schematic for the 5760 EVM board on page 12 of the EVM manual. On the eval board there is no way to short OUTA- and OUTA+ before the inductor as is shown in the datasheet. There is no jumper in front of the output inductors to make the short.

    So how do you configure the EVM board for PBTL mode? Only way we can see is to short the OUTA+/OUTA- of the eval board together after the inductors. But does that work with the extra inductor in the circuit? We can't find anything in the manuals saying that this is the correct way to hook up the speaker in PBTL mode for the eval board.

  • Hi, Jon,

    We made the decision to simplify the EVM so we left out a jumper before the inductors. If you want to evaluate that, you will need to solder some wires on the EVM.

    -d2