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Transimpedance amplifier for optical receiver

  • US 5,455,705 A
  • Filed: 03/14/1994
  • Issued: 10/03/1995
  • Est. Priority Date: 03/14/1994
  • Status: Expired due to Term
First Claim
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1. A transimpedance amplifier for an optical receiver comprising:

  • an integrator circuit for receiving a current input from a photodetector;

    an integrator capacitance between an input and output of said integrator circuit;

    a gain stage, responsive to said output of said integrator circuit, for providing an output voltage representative of the current input to said integrator circuit; and

    a feedback resistance connected between the output of said gain stage and said input of said integrator circuit for establishing the nominal gain of, and in conjunction with said integrator capacitance for setting the nominal bandwidth of, the transimpedance amplifier;

    where said gain stage increases the bandwidth by the factor of the gain.

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