Amplifier circuit for converting the current signal from an...

Details Amplifier circuit for converting the current signal from an... Amplifier circuit for converting the current signal from an...

2007-04-17

2007-04-17

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

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

C330S086000, C330S110000

Reexamination Certificate

active

11066944

ABSTRACT:
An amplifier circuit for converting the current signal from an optical receiving element into a voltage signal. The amplifier circuit includes a transimpedance amplifier having a differential amplifier and a feedback resistor, a first adjustable resistor which is connected in parallel with the feedback resistor and whose resistance value is defined by a first control signal, and a series circuit connected in parallel with the feedback resistor. The series circuit includes a first capacitor and a second adjustable resistor, whose resistance value is defined by a second control signal. The two adjustable resistors are preferably formed as MOS resistors and have the same control signal applied to them. The amplifier circuit permits the provision of a high dynamic range during the operation of a transimpedance amplifier.

REFERENCES:
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patent: 5812030 (1998-09-01), Inami et al.
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patent: 2005/0046482 (2005-03-01), Schrodinger
patent: 41 12 934 (1993-10-01), None
European Search Report in German, Patent No. EP 05090179.2.

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