Differential amplifiers

Details Differential amplifiers Differential amplifiers

2007-07-24

2007-07-24

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S069000

Reexamination Certificate

active

11264213

ABSTRACT:
Differential amplifiers comprise a differential input stage, first, second, third, and fourth fixed current sources, a first resistive element, and a current-folding element. Due to topology thereof, the differential amplifier converts the difference between the input voltages to the voltage difference between the source voltages of the transistors in the differential pair, and a current is induced through the first resistive element, thereby generating two currents. The current-folding element folds the two currents to generate output voltages.

REFERENCES:
patent: 5994959 (1999-11-01), Ainsworth
patent: 6188280 (2001-02-01), Filip
patent: 6366140 (2002-04-01), Warwar
patent: 6828855 (2004-12-01), Wang
patent: 7142056 (2006-11-01), Blecker et al.

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