Hello,
I'm trying to design a circuit where I can sense the voltage (24VDC) from an isolated converter. I'm using the AMC1200-Q1 from TI as the sensor. It's supposed to be a current sense, but I'm not interested in sensing the current drawn, just voltage. Reason to check this voltage is because it's (enabled in another part not shown) to power a different section. OPA2234 is just to amplify the voltage. The +24VDC_CHK is going to an analog input on a pic micro. Not sure what you guys use out there for this type of application, but I want to see what others have done and if there is a simpler way. I though of adding a high value resistor from B_GND to A_GND, but wouldn't that violate isolation?
I'm trying to design a circuit where I can sense the voltage (24VDC) from an isolated converter. I'm using the AMC1200-Q1 from TI as the sensor. It's supposed to be a current sense, but I'm not interested in sensing the current drawn, just voltage. Reason to check this voltage is because it's (enabled in another part not shown) to power a different section. OPA2234 is just to amplify the voltage. The +24VDC_CHK is going to an analog input on a pic micro. Not sure what you guys use out there for this type of application, but I want to see what others have done and if there is a simpler way. I though of adding a high value resistor from B_GND to A_GND, but wouldn't that violate isolation?