1. Is it ok to apply audio signal to the VIN when device is not powered up? no damage to the device?
2. what is input impedance of analog input ? typ is 20kohm but what is min-max?
3. what is tolerance of internal bias voltage at analog input? typ is AVDD/2.
4. this is not question about analog input though.
- what is VIH min and VIL max for digital input?
- what is VOH min and VOL max for digital input?