EVAL-CN0349-PMDZ: Fully Isolated Conductivity Data Acquisition System


The circuit on EVAL-CN0349-PMDZ provides a complete, robust data acquisition solution for processing conductivity cell outputs, including temperature correction. This circuit is ideal for measuring the ionic content of liquids, water quality analysis, and chemical analysis.

This design solution is optimized for high precision and low cost, and it uses only five active devices. The circuit has a total error of less than 1% FSR after calibration. The small footprints of all the components make the circuit ideal for applications where printed circuit board (PCB) real estate is a premium. The digital output of the circuit is fully isolated; therefore, the ground loop interference is eliminated, making it ideal for harsh industrial environments.


Manufacturer Analog Devices Inc.
Category Sensor Solutions
Sub-Category Other Sensing Solutions
Eval Board Part Number EVAL-CN0349-PMDZ-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Normally In Stock
Purpose Signal Conditioning
Range 0.025 ~ 200 mS/cm
Sensing Method Conductivity Cell
Voltage In 3.3 V
Features ADC's for Sensor Reading
I²C Interface
Isolated power and data
Temperature Compensation
Design Author Analog Devices
Component Count + Extras 39 + 6
Main I.C. Base Part AD5934
Date Created By Author 2014-09
Date Added To Library 2018-03

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