Transimpedance amplifier with linearized transconductance...

Details Transimpedance amplifier with linearized transconductance... Transimpedance amplifier with linearized transconductance...

2007-04-10

2007-04-10

Mottola, Steven J. (Department: 2817)

Amplifiers

Signal feedback

Amplifier in signal feedback path

C330S308000

Reexamination Certificate

active

11011719

ABSTRACT:
The invention relates to a feedback circuit for a transimpedance amplifier, which is typically used for converting an input current from a photodiode into an output voltage. The feedback circuit of the present invention linearizes the transconductance feedback, as the input current signal varies, by providing a constant current source for supplementing the DC feedback current through a bypass transistor, thereby reducing a variation in the low frequency cut off.

REFERENCES:
patent: 6404281 (2002-06-01), Kobayashi
patent: 6504429 (2003-01-01), Kobayashi
patent: 6590455 (2003-07-01), Kobayashi
patent: 6690218 (2004-02-01), Goldblatt
patent: 6753733 (2004-06-01), Bakx
patent: 6771132 (2004-08-01), Denoyer et al.
patent: 2004/0196105 (2004-10-01), Filip

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