LMP91200 NRND Status

Steven Sweeney

Other Parts Discussed in Thread: LMP91200, LMP7721, LMC660

I see that the LMP91200 (AFE for pH Sensing Applications) has moved to NRND status (Not Recommended for New Designs).

Is there a replacement forthcoming?

If not, does TI suggest another circuit topology to solve the fundamental problem of electrochemical sensing, an amplifier with extremely high input impedance, that retains an extremely high input impedance when powered down?

Thanks!

over 8 years ago

0 Michael Stout over 8 years ago

TI__Genius 16890 points

Hi Steven,

Sorry, there is not a replacement for the LMP91200 coming.

When implementing this using discrete amplifiers some suggestions are to use the LMP7721 for the pH Buffer and the LMC660 for the VCM Buffer.

Mike

0 Steven Sweeney over 8 years ago in reply to Michael Stout

Prodigy 30 points

Thank You, Mike.

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LMP91200 NRND Status