Transimpedance-type amplifier circuit with interchangeable resis

Details Transimpedance-type amplifier circuit with interchangeable resis Transimpedance-type amplifier circuit with interchangeable resis

1999-05-27

2000-10-31

Mottola, Steven J.

Amplifiers

With semiconductor amplifying device

Including atomic particle or radiant energy impinging on a...

330 86, 330110, H03F 308

Patent

active

061408786

ABSTRACT:
A transimpedance-type amplifier circuit includes a first resistor connected to a switching device and a second resistor connected with the first resistor in parallel with the switching device which is turned on in accordance with a result obtained by comparing an output from an inverting amplifier with a reference voltage. A diode is connected in parallel with the first resistor which is connected to the switching device, altering a feedback resistance constituted of these components. The diode maintains a terminal voltage across the first resistor to constant, and an optical current signal from a photodiode is therefore passed to discharge an electric charge accumulated in the parasitic capacitance of the photodiode.

REFERENCES:
patent: 5801588 (1998-09-01), Nishiyama
patent: 5821814 (1998-10-01), Katayama et al.
patent: 5952887 (1999-09-01), Katayanagi et al.

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