Transimpedance amplifier using negative impedance compensation

Details Transimpedance amplifier using negative impedance compensation Transimpedance amplifier using negative impedance compensation

2006-03-06

2008-11-18

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

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

Reexamination Certificate

active

07453322

ABSTRACT:
A transimpedance amplifier (TIA) with negative impedance compensation comprises a TIA element and a negative impedance compensator connected to the output terminal of the TIA element. The major components of the negative impedance compensator are a negative impedance element formed by a positive feedback circuit, and a compensation circuit for the parasitic capacitance at the output terminal. The negative impedance compensator changes the equivalent impedance of the output terminal from low to high with respect to the ground, and compensates the parasitic capacitance at the output terminal. Thus, an increase of both bandwidth and voltage gain is achieved.

REFERENCES:
patent: 4855687 (1989-08-01), Hebert
patent: 7002409 (2006-02-01), Aram
patent: 2003/0218508 (2003-11-01), Chiou et al.
patent: 2006/0045531 (2006-03-01), Killmeyer et al.

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