Cannot find the ESD measurements with multimeter

Hey MohaOmar ,

I'm not quite sure what's going on here — based on the values you provided; it does seem like the device may be damaged. Can you share what operating conditions are being used?

For the input and output side (RFIN/RFOUT), since the device is internally AC-coupled, you should expect to see an open load (OL) on a DMM, which matches your observation.

From what you’ve shared, it looks like only the power supply rails were measured, but not RFIN and RFOUT. If you are seeing a short or very low resistance on those pins, that could indicate internal damage to the device.

Below is a quick procedure to measure an evaluation board with ESD protection using the diode setting on a DMM.

Also, to confirm — I assume you're performing these measurements with the power off and using just the multimeter?

RFIN/RFOUT to GND 

• If ESD diodes are present, you should expect a diode drop between 0.5V to 0.7V in one direction, and open (OL) in the reverse (or high resistance).
• If input protection is absent, reading could be very high.
• ESD event damage can be determine by short circuit (low ohms).

VDD to GND

• If ESD diode are present, you should expect a diode drop between 0.5V–0.8V in one direction, and open (OL) In reverse (or high resistance)
• If input protection is absent, reading could be very high.
• ESD event internal failure can be determine by a short circuit (low ohms)

VGG to GND

• If ESD diodes are present, you should expect diode drop in one direction.
• If input protection is absent, reading could be Open load, OL both ways.
• ESD event damage can bet determine by short circuit.

Regards,

Dorant