Variable gain current feedback amplifier

Details Variable gain current feedback amplifier Variable gain current feedback amplifier

2005-06-14

2005-06-14

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

C330S282000, C330S291000

Reexamination Certificate

active

06906595

ABSTRACT:
An apparatus comprising an amplifier, a first resistor and a second resistor. The amplifier (i) comprises a first transistor and a second transistor and (ii) may be configured to generate an output signal in response to an input signal. The first resistor may be connected between an emitter of the second transistor and a signal ground. The second resistor may be connected between the emitter of the second transistor and a base of the first transistor. A gain of the amplifier may be adjusted by varying a value of the first resistor and a value of the second resistor.

REFERENCES:
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patent: 6211737 (2001-04-01), Fong
Robert G. Meyer et al., “A Wideband Low-Noise Variable-Gain BiCMOS Transimpedance Amplifier”, IEEE Journal of Solid-State Circuits, vol. 29, No. 6, Jun. 1994, pp. 701-706.

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