Class AB output amplifier stage

Amplifiers – With semiconductor amplifying device – Including differential amplifier

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Details

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

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