Hi Team,
Now customer is using MSP430 to do the ADC sampling of AVSS(-5V), AVCC(+5V) and VBus(12V) as follows.
So the questions are that:
1. If the resistor connected to GND is broken, the ADC port will be +5V, what will be happen? The +5V voltage will have the potential to break the ADC module or break the whole IC?
2. If the resistor connected to AVCC is broken, the ADC port will be -5V, what will be happen? The -5V voltage will have the potential to break the ADC module or break the whole IC?
3. For the 2rd item, is there any solution or external circuit can avoid the negative voltage to break ADC or IC? Customer used D106 diode to clamp the voltage, but still can't eliminate the negative voltage.
Thanks.
