instrumentation amplifer frequency response

Discussion in 'The Projects Forum' started by vjt2d3, Dec 3, 2009.

  1. vjt2d3

    Thread Starter New Member

    Dec 3, 2009
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    i need to create an instrumentation amplifer with 1000 gain. If i have 1000 gain in the first stage and a unity gain in the second stage, i get a upper frequency of 1k Hz in the frequency response. When I divide the gain into 100 in the first stage and 10 in the second stage, i get around 10k Hz in the frequency response.
    Why is there a difference.
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    You will do even better if you build two amplifiers with a gain of about 32.
     
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