High bandwidth resistor

Details High bandwidth resistor High bandwidth resistor

2007-08-28

2007-08-28

Nguyen, Khanh Van (Department: 2817)

Amplifiers

Signal feedback

Variable impedance in feedback path varied by separate...

C330S282000, C330S308000

Reexamination Certificate

active

11118283

ABSTRACT:
A transimpedance amplifier is provided which includes a feedback path. The feedback path includes a feedback resistor and a voltage generator. The feedback resistor has a parasitic capacitance associated therewith. The feedback resistor also has a first node at a first voltage. The voltage generator can be capacitively coupled to the feedback resistor at a second node via the parasitic capacitance. The voltage generator is configured to generate a second voltage at the second node which is substantially equal to the first voltage. This prevents a current from flowing through the parasitic capacitance thereby reducing and/or eliminating the effect of the parasitic capacitance on the transimpedance amplifier.

REFERENCES:
patent: 4216434 (1980-08-01), Wermuth
patent: 6307433 (2001-10-01), Ikeda

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