AD8211 BCI EMC testing

Hi, mglunch2.

Can you elaborate the problems or issues you've been encountering on BCI EMC testing using AD8211?

Regards,

Anna

Anna:

At about 1 GHz CW mode, the system diagnostics report an over current condition in the solenoid circuit. The AD8211 acts as a high-side shunt amplifier, its output sent to a a-to-d in the system micro.  Data is downloaded continuously over CAN. We can see current signal go from 300 mA nominal to 2.5A (apparently)   We are in the process of trying to determine if PWM control is at fault, resulting in over current due to incorrect FET control, or if it is the op-amp.  The data we are looking for is if common mode RF can upset the Op-Amp’s bias circuit, resulting in incorrect output.  If so, what behavior?  Goes to a rail, goes to some fixed level, etc.

Thanks

Mark

Hi.

This is being handled offline.

Regards,

Anna

Good Morning

we have the same problem. Could you please help us? This is our current sense layout

Thanks

Good Morning

Could you hel me?

Thanks