We currently have an inverter that we are using the AD629 device to control a speed input of up to 9V (0-9V)
We have are using a dual power supply +/-12V, ARZ package
We have ruined a couple of these chips and the only difference is that sometimes the supply voltage was not supplied first.
Does having an input signal with no supply voltage active be a possible source of failure?
What are other modes of failure common to this chip?
The parts usually get damage if you violated any of the limits specified on the Absolute maximum ratings as shown below.
May I know what is the connections of Pin 1 and Pin 5 (REF(-) and REF(+)) on your circuit? If you could share your schematic, it would also be helpful in troubleshooting.