AD converter
mechstamp
Posts: 5
Good evening.
We have a sensor which measures in a range from about -100mV to 100mV, the problem we have is that there is too much noise in our signal to get an accurate reading. Any suggestions as to how we could get a more stable signal?
We have a sensor which measures in a range from about -100mV to 100mV, the problem we have is that there is too much noise in our signal to get an accurate reading. Any suggestions as to how we could get a more stable signal?
Comments
You can try putting a bipolar capacitor across the input (a greencap or monolithic or polystyrene). Look at your shielding on your pickup cable, is it shielded at the source (sensor) only? Can you isolate the sensor and put a meter or CRO on it and check the noise isn't creeping in at the sensor itself rather than the cable? How long is your cable? Can you put an op amp at the sensor and boost the level there? etc
For a good reference book on this kind of thing
www.amazon.com/Noise-Reduction-Techniques-Electronic-Systems/dp/0471657263