Apparatus and method for a low-voltage supply low-power...

Details Apparatus and method for a low-voltage supply low-power... Apparatus and method for a low-voltage supply low-power...

2006-06-13

2006-06-13

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S278000

Reexamination Certificate

active

07061319

ABSTRACT:
A low-voltage supply low-power variable gain amplifier is shown that includes an input control circuit for receiving input signals, a variable gain amplifier (VGA) coupled to the input control circuit, and a circuit output terminal. A differential transconductor is interposed between the input control circuit and the VGA. The VGA amplification of the differential transconductor output is controlled by a gain control voltage signal. A differential amplifier is interposed between the input control circuit and the differential transconductor, where the differential amplifier receives and amplifies the input signal to produce an amplified input signal. An output filter is interposed between the VGA and the circuit output terminal.

REFERENCES:
patent: 6566951 (2003-05-01), Merrigan et al.

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