Hi,
it seems that there is a mistake in the schematic. The DGND (pin 4) of the PT2399 is never tied to ground.
So, if you tie it to ground (or pin 3), it should work.
Steve
it seems that there is a mistake in the schematic. The DGND (pin 4) of the PT2399 is never tied to ground.
So, if you tie it to ground (or pin 3), it should work.
Steve