Dear ladies and gentlemen,
we would like to perform electrochemical measurements using ICs like the ADuCM355. In the manual of the ADuCM350, potentiostat measurements aren’t mentioned, but EIS-measurements are mentioned.
1) What is the difference between the ADuCM350 and the ADuCM355? Is it possible to do potentiostat measurements using the ADuCM350?
2) Do other ICs exist that can perform electrochemical measurements, i.e. electrochemical impedance sprectroscopy (EIS, measuring of the impedance of an electrochemical system at different frequencies), cyclic voltammetry (CV, applying a sawtooth shaped voltage to an electrochemical system) and open circuit potential (OCP) measuring the output voltage of an electrochemical system at quite high input impedances, such as 100 Gohms)
3) Do Labview-examples resp. Labview-VIs exist for communication with these ICs?
Q1. The ADuCM355 is the more recent addition to the ADuC family and used the ADuCM350 as its design starting point.
Q2. The AD5940 is another option - similar to the ADuCM355 but, without the microcontroller core.
- 100Gohms impedances would require external amplifiers to accompany the ADuCM35x and AD5940 devices.
Q3. The ADuCM355 example software provides simple examples for electrochemical techniques like EIS sweeps, CV and current measurements while generating different bias voltages across an EC sensor. The results are to the users PC via a UART-USB transceiver where the results can easily be captured in a text file and processed in Excel or in real-time via a Python or Labview script. However, we don't have example Labview VIs.
See the Eval board user guide for details:
I am moving this thread to its proper community Ultra Low Power Microcontrollers so others can be easily found it.