hello,
I used LM348 opamp as instrumentation amplifier,I can read fine the output voltage in digital voltmeter.
When I connect it dirrectly to ADC of PIC16F877A, I can not read the value because very fluctuative.
My ADC is working fine for other voltage value except from instrumentation amplifier.
Is it the noise of instrumentation amplifier? What should I do to solve it?
Thanks,
mgfr
I used LM348 opamp as instrumentation amplifier,I can read fine the output voltage in digital voltmeter.
When I connect it dirrectly to ADC of PIC16F877A, I can not read the value because very fluctuative.
My ADC is working fine for other voltage value except from instrumentation amplifier.
Is it the noise of instrumentation amplifier? What should I do to solve it?
Thanks,
mgfr