Hi,
In one of my design ,I wrongly connected the EN and VREF2 pin of PCA9306 i.e ,I connect EN pin to VCC_B supply through 200K resistor and VREF2 directly to the VCC_B. I observed the voltage lifting at the VREF1(1.8 v becomes 2.2).When I connect the EN and VREF2 pin according to the recommended path(EN and VREF2 shorted and connected that to VCC_B through 200K) there is no voltage lift at VREF1.
Can anyone give clarification on this scenario? I came to know it is due to leakage path after reading some of the E2E posts, but can anyone describe the leakage path on IC with some more data(like internal block diagram of IC) if possible? I am curious to know about this.
Regards,
Jenitt