Hi Sirs,
As title, is the TPA6166's IRQ# an open drain or push-pull signal? We assume that it is an open drain signal because the datasheet does not specify VOH(min) and there is a 100kR pull up to 1.8V on its EVM. However, there is no pull up resistor on the reference design on the datasheet. Would you pls confirm if that if the pull up resistor on IRQ# mandatory? Is there internal pull up with the IRQ#
TPA6166 EVM Schematic
TPA6166 Datasheet