TDA7498 input bias voltage

[breez]

Hello everyone!

This single supply amp has AC coupled input because of DC bias voltage that exists at the input pins. However, this bias voltage is not specified in the datasheet and it might not simply be half of the supply voltage (e.g. TPA3116 has 3V). I don't have any amplifier boards yet, but I would need to know this voltage. So, could someone measure it? Just measure voltage after input caps referenced to ground. Thank you!

I'm asking because I want to use the amplifier DC coupled in non-audio application.

 

[breez]

I think I figured it out from the datasheet. Range of voltages at input pins is stated as -0.3V to 3.6V implying the input stage is operating from 3.3V supply. There exists VDDS output at 3.3V and VREF output at 1/2 VDDS giving 1.65V as the input bias voltage.