Instrumentation Amplifier (Signal Conditioning Circuit)

Discussion in 'Analog & Mixed-Signal Design' started by Atiera Othman, Feb 21, 2016.

  1. Atiera Othman

    Thread Starter New Member

    Feb 16, 2016
    2
    0
    hello, I am Ara
    I need to implement a signal conditioning circuit for prtd(pt100)
    below i attach my circuit using lt spice
    In my signal conditioning circuit. the Vin for Wheatstone bridge is 10V. I want to produce a 1V for Vout at instrumentation amplifier.
    I want to ask an opinion about my progress on this circuit.
    what is ratiometric on bridge circuit?
    how to linearization rtd ?
    what does zero compensation mean ?
    What is CMRR and GBP in this circuit?
    how about the filter part?
    what should i consider about at this part?
    I really don't have idea about a signal conditioning circuit design.
    please help me.
    you kindness really help my research on this design.
    thanks
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,991
    3,227
    You will get much better performance if you use a dedicated instrumentation IC, rather than building up one from discrete op amps and resistors.
    The mismatch of standard 1% resistors will give a poor common-mode rejection of the amp.
     
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