This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

INA116: help me for design ph meter with ina116

Part Number: INA116
Other Parts Discussed in Thread: LMP91200

I am going to interface with ina116 and build a ph meter. after searching I can't find anybody work with this IC without the problem and everyone have a problem with this. can somebody help me and give me his or her schematic or PCB design working without problem


  • Hi Rashid,

    You are correct, it is rather difficult to build a robust pH meter with the INA116. For your application, we recommend looking at the LMP91200. The LMP91200 is a sensor analog front end that is specifically optimized for low power pH sensing applications. We offer an evaluation board for this device that can be found here: . This board allows you to configure the LMP91200 through a 3-wire SPI interface and provides connections for a pH probe and RTD. Hope this helps!


    Zak Kaye

    Precision Amplifiers Applications