Is there any reference design or application note on how to create the circuit for a EC and PH probe circuit for liquid substances?
Or if someone can point me in the right direction.
LMP91200 is an Integrated analog front end for pH Sensing Applications and we have a reference design that uses this part, TIDA-00561, which you can find in the following link:
Best Regards,Victor S.Check my recommended TI resources
In reply to Victor Salomon:
In reply to Dharmesh Joshi:
There is a couple of approaches used in Electrical Conductivity depending on your application. If you are considering Inductive Sensing check out the products available and for any Inductive Sensing specific questions please go to the Inductive Sensing Forum.
If you are using electrode conductivity sensors you will need to work on your signal conditioning, refer to the following E2E Post for reference:
I hope I can address some of your questions for for more specifics I would recommend posting on the forum of the technology you are considering (e.g. Inductive Sensing Forum or Precision Amplifiers Forum).
Dharmesh JoshiCan you please explain what you mean by signal conditioning? Would this mean by signal output such as sine wave?
Dharmesh JoshiI am thinking using the PWM output of my microcontroller. I am not sure how this would be incorporated as an AC signal, with 3.3V... As suggested to use an transimpedance amplifier, which is first schematic, but is the second schematic is total different design?
Dharmesh JoshiWhere would probes connect? Would you have any document on this?
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