Variable-gain constant-bandwidth transimpedance amplifier

Amplifiers – Signal feedback – In cascade amplifiers

Reexamination Certificate

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C330S069000

Reexamination Certificate

active

11500241

ABSTRACT:
A transimpedance amplifier (TIA) circuit comprises a first operational transconductance amplifier (OTA) having an input and an output. A second OTA has an input and an output. A third OTA has an input that communicates with the output of the first OTA and an output that communicates with the input of the second OTA. A first feedback path communicates with the input and the output of the first OTA and that includes a first resistor. A second feedback path communicates with the input and the output of the second OTA and that includes a first resistance. A third feedback path communicates with the input of the first OTA and the output of the second OTA.

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