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bandwidth and high gain amplifier

Discussion in 'Electronic Basics' started by smokie, May 4, 2005.

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  1. smokie

    smokie Guest

    Is it possible to increase the bandwith of a high-gain amplifier by
    substituting two lower gain amplifiers?
     
  2. Yes.

    Assuming that the amplifiers are op-amps, then having two, each with
    lower closed loop gains, will result in great overall BW. This is
    because that closed loop BW of an op-amp is inversely related to its
    closed loop gain.

    Kevin Aylward

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.
     
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