Does the AD8605 have a protection against voltages below 0V ?
I can see in the datasheet (p 16) that there is a protection against overvoltage. It says that if the voltage is 0.5V higher than Vcc supply, a current limiting resistor should be added to limit the input current below 5mA. I suppose that this 0.5V means there is an internal clamping diode to Vcc, but I don't see Vcc+0.5V specified in the absolute maximum ratings. Why is that?
Then, I don't see anything in the datasheet regarding protection against voltages below 0V. Is there a clamping diode to ground?
In fault condition, my AD8605 can see a voltage as high as -/+65V with a 250K series resistor. Can the AD8605 withstand it?