Hi guys,
I'm using PIC18F87J72 energy metering device and attempting to measure AC power by sensing across a 0.0005 ohm shunt resistor. Am I crazy to think that I will be able to see a 1 uV difference on the Current +/- differential inputs?Settings: 24-bit, Gain of 32 (maximum), OSR 256, DRCLK 3.9KHz, Dithering on. Both input signals use up the majority of the allowed input range (+/- 600mV). So far all of the readings just looks the same and I think it's because I just can't detect that small of a voltage in the presence of noise. Thoughts would be greatly appreciated!!
Thanks,
Jeremy
I'm using PIC18F87J72 energy metering device and attempting to measure AC power by sensing across a 0.0005 ohm shunt resistor. Am I crazy to think that I will be able to see a 1 uV difference on the Current +/- differential inputs?Settings: 24-bit, Gain of 32 (maximum), OSR 256, DRCLK 3.9KHz, Dithering on. Both input signals use up the majority of the allowed input range (+/- 600mV). So far all of the readings just looks the same and I think it's because I just can't detect that small of a voltage in the presence of noise. Thoughts would be greatly appreciated!!
Thanks,
Jeremy