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TPA2051D3 DVDD and input line queries

Sateesh Nayak
Prodigy 110 points
Other Parts Discussed in Thread: TPA2051D3

Hi,

We are using TPA2051D3 amplifier. Please suggest for the following questions.

1) The datasheet says VIH(min)= 1.3V and VIL(max)=0.3V for VDD=1.8V and VIH(min)= 3V VIL(max)=0.3V for VDD=3.3V. Can you suggest what will be VIH and VIL values for VDD=2.9V.

 2) Datasheet says the maximum delay time between AVDD and PVDD to DVDD (tpws)  is 100us. We have a test case when AVDD and PVDD will be ON but DVDD will be off So what happens in  this case and what happens when DVDD is applied after that. You have a suggested a resistor divider if tpws is  more than 100us but in our case AVDD is a variable voltage so we cant keep DVDD constant if we use resistor  divider. 

 

3) Can we give differential input to the stereo input lines (INL1,INL2, INR1, INR2).

Regards,

Sateesh