Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1983-07-05
1984-10-30
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330253, 330260, 330264, 330265, 330311, H03F 345, H03F 330
Patent
active
044802307
ABSTRACT:
A CMOS Class AB power amplifier is disclosed wherein supply-to-supply voltage swings across low resistive loads are efficiently and readily handled. A high gain input stage including a differential amplifier driving a common source amplifier drives unity gain push-pull output stage. Included in the invention is circuitry to control the DC bias current in the output driver devices in the event of an offset between the push-pull unity gain amplifiers.
REFERENCES:
patent: 4053795 (1977-10-01), Cochran
Brehmer Kevin E.
Laber Carlos A.
Wieser James B.
Mottola Steven J.
Mullins James B.
National Semiconductor Corporation
Pollock Michael J.
Winters Paul J.
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