robertgatt
New Member
I am using an 18x running off 5 volts. The adc pin 1 is reading amplified voltages from a thermocouple. If the thermocouple leads get disconnected the full voltage (9 V) will be feed to pin 1. I assume that this will kill the chip. I have placed a n114 diode between pin 1 and vcc (cathode of diode to vcc). This limits the overvltage to 5.6V. Is this ok, or would any voltage above vcc do damage.
Thanks,
Robert
Thanks,
Robert