Mehmood Ahmed
New Member
Hi,
I am having accuracy problem with PIC16F877A ADC. I am using 2 ADC channels for analog signal input and switching one after reading value on other channel continuously in ADC interrupt. I have set Vref- on 1Volt and Vref+ on 3 references are fixed and showing no variations. after scaling the readings i am putting result on seven segment displays and pwm channels for each analog input. both channels giving variation in reading of around 2~3BIT LSB at fixed input signal. I am using dc signals for input.
Thanks
I am having accuracy problem with PIC16F877A ADC. I am using 2 ADC channels for analog signal input and switching one after reading value on other channel continuously in ADC interrupt. I have set Vref- on 1Volt and Vref+ on 3 references are fixed and showing no variations. after scaling the readings i am putting result on seven segment displays and pwm channels for each analog input. both channels giving variation in reading of around 2~3BIT LSB at fixed input signal. I am using dc signals for input.
Thanks