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LMP91002: LMP91002

sasi kumar1
Expert 1090 points
Part Number: LMP91002
Other Parts Discussed in Thread: LMP91000

Hi 

we are designing a voltammetry circuit using LMP91002, we tried [8.1.2 Sensor Test Procedure] providing VDD=3.3V, DGND=MENB=AGND=GND, 10K resistor is connected between C1 & C2, An electrode is connected as per the requirements CE WE RE are connected, we got Vre = 1.689V, Vwe=1.651V, but unable to measure Vrw , & VOUT = 1.651V, we are getting a stable voltage of VOUT  = 1.651V even when the electrode is dipped in the solution, we are unable to check the change in voltage 

Thanks & Regards

Sasikumar E

  • 0
    TI__Genius 9310 points

    Sasikumar,

      Most of the time this is a sensor setting issue. I recommend you down load the LMP91000 Sensor AFE software on the LMP91002 web page. The software is intended to be used with an EVM, but you can use it to find a probe similar to your probe to have a beginning point on setting up your probe.

    Good luck and let me know if you have any issues.