Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1995-05-23
1997-04-15
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330255, 330260, 330264, 330267, H23F 345, H03F 330
Patent
active
056213573
ABSTRACT:
An AB class stage is described which comprises two complementary MOSFET final transistors connected in a push-pull manner between two supply terminals. In order to attain high linearity, low switching distortion, a high ratio between the maximum output current and the rest current, independence of the rest current from the temperature and manufacturing variables and a circuit simplicity, the circuits determining the rest current and those which provide current to the load are substantially independent of one another. More particularly, two transconductance amplifiers are provided which control the final transistors and are dimensioned so as to have zero output current in rest conditions, two voltage generators which determine the rest current and two resistors being connected between the gate electrodes of the final transistors and the supply terminals.
REFERENCES:
patent: 4152663 (1979-05-01), Van de Sande
patent: 4866398 (1989-09-01), Gulczynski
patent: 4888559 (1989-12-01), Sevenhans et al.
patent: 4963837 (1990-10-01), Dedic
patent: 4970470 (1990-11-01), Gosser
patent: 5039953 (1991-08-01), Su
patent: 5166635 (1992-11-01), Shih
patent: 5172073 (1992-12-01), Fujii
patent: 5266887 (1993-11-01), Smith
patent: 5399991 (1995-03-01), Moraveji
Botti Edoardo
Chiozzi Giorgio
Ahn Harry K.
Carlson David V.
Mullins James B.
SGS--Thomson Microelectronics S.r.l.
LandOfFree
Class AB output amplifier stage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Class AB output amplifier stage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Class AB output amplifier stage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-363924