wanchope
Member level 4
Hi,
I have an 12 bit ADC to monitor a lithium polymer battery. The useful voltage ranges from around 8V to 12V. What is the better way to monitor this range using my 5 volt powered ADC?
I was using an opamp voltage translater to detect it, but it gives me 0.1 to 0.2 volt difference for different boards. (FYI, I am using 1% tolorance resistor.) And hence the ADC values are not accurate.
Anyone has a better circuit to do this job with minimum board-to-board difference?
regards
I have an 12 bit ADC to monitor a lithium polymer battery. The useful voltage ranges from around 8V to 12V. What is the better way to monitor this range using my 5 volt powered ADC?
I was using an opamp voltage translater to detect it, but it gives me 0.1 to 0.2 volt difference for different boards. (FYI, I am using 1% tolorance resistor.) And hence the ADC values are not accurate.
Anyone has a better circuit to do this job with minimum board-to-board difference?
regards