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2 LMP91000 - 4 Electrode Electrochemical Cell - Shorting FET

Christian Lenz1
Prodigy 20 points
Other Parts Discussed in Thread: LMP91000

Hi everybody.


I just studied the design using two LMP91000 proposed by Domenico in another post:

In order to ensure short start up times 3 electrode sensors are usually shortened when not used. The LMP91000 offers that using an internal FET shorting the reference electrode with the working electrode.

For 4 electrode sensors it is generally recommended that to shorten additionally the auxiliary electrode (i.e. REF-SEN-AUX) to ensure short startup times. The design above does not allow to do so as you connect CE-RE directly. Do you have any experiences regarding that?

Thanks for your efforts!

Chris