Actually I want to want to measure exact voltage from the current sense amplifier and that is connected to the BLDC motor. I want to make the current protection circuit. So as current increase from its recommend value, I want that It just turn off the supply given to the BLDC motor. And for that I have used the comparator of the MSP430G2553 Microcontroller. In that Comparator, I have to give the reference voltage (On the inverting terminal) So I just want to measure the voltage from the current shunt amplifier to decide the reference voltage. I am thinking that the value of ADC is greatly effected by the supply voltage of the Microcontroller. My Entire target board work on 3.3V and 3.6 V is the maximum operating condition. I have seen that the controller used on that launchpad have 3.6V as maximum operating voltage condition.
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