Dear All, I have a 4-20mA pressure sensor and use a microcontroller to measure the pressure. My region of Interest is 9-11mA and an AD620 maps it to0-5V. However, occasionally the pressure swings and the output of the AD620 becomes negative or above 5V due to the high gain of the amplifier. I wonder if negative or >5V will hurt the A/D port of the microcontroller. Do I need a clamping circuit that holds the output between 0-5V.