TDA7386 Problem

[jorge_rc]

I try to build the circuit using the TDA7386. I tought I had recriated the schematic provided on datasheet, but ir didnt work...


I let the for you to can help me.


Please Help me

[mjf]

hello.
i think you have reverted tab and svr - tab goes to ground and svr needs the elcap..................
greetings.....

[pacificblue]

At first glance it seems that the 47 µF capacitor is at the wrong pin. It should be connected to pin 10, but you connected it to pin 25.

[jorge_rc]

Originally posted by mjf
hello.
i think you have reverted tab and svr - tab goes to ground and svr needs the elcap..................
greetings.....

Thanks.. but is that enough to make the circuit not to work???


Thanks again

[pacificblue]

Yes, because the SVR pin controls the on/off delay. It is charged through the TDA, and the amplifier turns on, when the capacitor is charged to a certain voltage. If you force that pin to ground, the amplifier will remain off.

[jorge_rc]

OK. Thanks a lot....

And what about mute and stby?


thanks

[pacificblue]

Mute and Standby should turn on after the amplifier. The datasheet application you are using is surely designed accordingly.