Other Parts Discussed in Thread: INA333, OPA333
Tool/software:
Hello,
I am currently testing my product under 0-400MHz - 100mA or 60mA - bulk-current-injection(BCI) test. I have an INA333 design for my product. You can see my design below.
As you know during BCI test that we apply current on output cables of product. I have four cables which is VCC,GND,CANH,CANL.
When I apply current on can cables, output change of INA333 is accaptable. You can see the change of graphic below.
When I apply current on power cables or all cables at the same time, output change of INA333 has peak between 20-30Mhz (always at same frequency). You can see the change of graphic below.
I have an input filter for INA but it is not enough. Should I add an output filter of INA? How can I solve this problem?
I can test all your recommendation. I am waiting for your response.
Thank you.
Best Regards.