Hi everyone!
I am trying to read a vacuum sensor by converting a voltage signal to a digital signal using an Analog to Digital Converter with a raspberrypi 4 and need help picking the right ADC. My goal is to have the highest precision as possible which I believe means I’d need to measure as low as 1mv (0.001v)
1- Can someone recommend me the right Adafruit ADC?
2- Can someone describe what 5V5T and LBD mean and which might be better for my application?
The vacuum sensor manual says:
Analog Output
The unit has an analog output. This analog output is normally scaled by 5V5T volts. LBD volts are also available, as described below.
5V5T Provides a voltage output proportional to vacuum reading which ranges from 0-5 volts at 1mV per mTorr (1 micron = 1mV, 5 Torr = 5 Volts)
A Linear by Decade scheme where the leading digit is scale, and the last digit is the vacuum reading. For example: 0.995 Volts = 0.995 Torr, 1.010V = 10.1T,
2.1V = 100T, and 3.760V = 760T
Link to Vacuum Sensor documentation:
https://www.ajvs.com/library/DigiVac_Mo ... _Sheet.pdf
Thanks!!
Need help finding right ADC
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- Franklin97355
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Re: Need help finding right ADC
I'm not sure about ADC bits but this should give you a great resolution.
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