I am having troubles getting this amp to work. When I input my signal (as suggested using a series cap and resistor on + and - in), I see distorted signals on the input pins with no power applied.
When I apply power (3.3V) the input on the pins show a DC bias voltage which I pretty much expect to see, but the audio signal that was distorted but present before goes flat line on both input pins. So on the input side of my input resistors (150k) I see a signal and on the other side of those resistors that tie to the input pins I see nothing.
Everything is configured as suggested on the datasheet. For my power I am using an L6920 step up converter to go from 1.5 to 3.3V. I don't think that's the problem though as it shows solid.
note 1:: I am using the MSOP (DGN package. I tried also connecting the heat sink to ground but since it's not electrically tied to ground I'm not sure why they are recommending to do this. This is a hand soldered prototype.
note 2: I may have blown up my chip? That's the only thing I can think of. I've never applied more than 3.3V to the circuit.
Any ideas?
