Amplifiers – With semiconductor amplifying device – Including atomic particle or radiant energy impinging on a...
Patent
1987-06-04
1988-09-20
Wan, Gene
Amplifiers
With semiconductor amplifying device
Including atomic particle or radiant energy impinging on a...
330311, H03F 304
Patent
active
047728590
ABSTRACT:
A temperature compensated amplifier network for a fiber optical receiver includes a photodiode having an optical input and a current output, and a cascadable transimpedance amplifier having N stages, each stage having a common base-emitter voltage. An emitter-follower transistor is coupled to the last stage of the transimpedance amplifier network and has a base-emitter voltage of the same magnitude but of opposite polarity from the base-emitter voltage of each of the amplifier stages. Any DC drift of the amplifier stages is therefore offset by a compensating drift in the opposite direction by the output emitter-follower.
REFERENCES:
patent: 4713841 (1987-12-01), Porter
Geny William O.
Gray Francis I.
Meza Peter J.
Tektronix Inc.
Wan Gene
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