I am building the schematic shown in the datasheet for the tpa3118d2 http://www.ti.com/lit/ds/symlink/tpa3118d2.pdf of the 2.1 sound system, and everything is working on board except the IC for the left and right speakers.
THe BTL subwoofer IC is working as intended, until I try to incorporate the other part. When I apply power to the SDZ pin of the IC for the left/right speakers the voltage is pulled low for both chips, causing neither to function. I've removed this chip various times, checked for shorts, and tried 7 other chips as well as a couple tpa3130d2's in it's place all to no avail. I am getting the fault ->sdz pin error cycling which gives me a faint 1hz click from the actual IC and from a speaker when hooked up.
I have built this using the same components/values as shown in the datasheet's schematic, is there possibly a problem with the output filter of the L/R amp causing this fault?
I have tried to power them both up at the same time, or one or the other powered up first. Oddly enough the subwoofer IC works fine without the L/R IC even soldered on the board... which is weird because the subwoofer IC is in slave mode.