2006-01-16 06:16 PM
2011-05-17 03:09 AM
Dear all,
i am using upsd3333d-80 pins, to measure voltage using adc ch0. The voltage measured came from a voltage divider using resister 2M7 and 300K, and the range of the the voltage being measured is 0-2.5V at ADC input pin. The VRef is connected to TS431 that gives 3.04V. My problem is i always got varying result of ADC reading (2-3 bit error). Any hints or suggestion, will be appreciated. thanks.