AD8137 input transient tolerance?

We have a DO-160 lightning protection circuit  for the input pins to the AD8137. We can clamp the voltage at 9V for 300ns. We are operating at +-5V rails. The datasheet abs max is +-6V.

I expect the part will survive the transient. Has there been any analysis of such a condition?

[edited by: KaidenJustin at 5:25 AM (GMT 0) on 24 Jun 2020]
  • 0
    •  Analog Employees 
    on Jun 24, 2020 4:20 AM 5 months ago


    If I got it right, your input voltage can be at 9V while your rails are +/-5V which is also your Absolute Maximum Rating for Input Commode Mode Voltage. A series resistor might be necessary to control the current and to protect your diodes.

    Therefore, I suggest that you have series resistor in your input pin.

    Your Rs can be defined by: