Linear amplifier

Details Linear amplifier Linear amplifier

2007-07-17

2007-07-17

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S12400D, C330S302000

Reexamination Certificate

active

10551027

ABSTRACT:
A linear amplifier circuit comprising a first differential amplifier (DA1) having a differential input terminals (I+, I−) for receiving a binary input signal, and a differential output terminals (O+,O−), a second differential amplifier (DA2) having input terminals coupled to the differential input terminals (I+, I−). The amplifier further comprises, a third differential amplifier (DA3) coupled in cascade to the second differential amplifier (DA2) and having its output cross-coupled to the differential output terminals in a feedforward connection, and a capacitor (C) coupled to the third differential amplifier (DA3) for determining an increase of a bandwidth of the linear amplifier, a current flowing through the capacitor (C) being proportional with a derivative of the differential input signal (I+, I−).

REFERENCES:
patent: 4887047 (1989-12-01), Somerville
patent: 5847600 (1998-12-01), Brooks et al.
patent: 6404285 (2002-06-01), Shkap
patent: 6750727 (2004-06-01), Sutardja
patent: 6985035 (2006-01-01), Khorramabadi
patent: 7068104 (2006-06-01), Burns et al.
patent: 7113744 (2006-09-01), Moloudi et al.

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