Temp sense conditioning

Discussion in 'The Projects Forum' started by geotronix, Nov 10, 2009.

  1. geotronix

    Thread Starter New Member

    Nov 9, 2009
    Hi everyone, I am trying to measure (using a pic) a temperature sensor AD592 and have a 2.5v reference. The AD592 outputs 1 micro amp per degree kelvin.
    I need help creating an op amp circuit that, using the 1 micro amp per degree kelvin part, will output 0v when the input is from 0-223 micro amps. Then from 223 micro amps to 333 micro amps the op amp should output between 0v and 2.5v (or close to it).

    Can anyone help me with this circuit?
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    Just buy an LM35?

    Does the AD592 source or sink its output current?

    Do you have split supplies for your opamp?