Dual push-pull amplifier circuit and method

Details Dual push-pull amplifier circuit and method Dual push-pull amplifier circuit and method

1996-09-20

1998-07-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330275, 330276, H03F 326

Patent

active

057810729

ABSTRACT:
An amplifier circuit (30) has the capability for driving a large number of loads while still maintaining the desirable gain response. The amplifier circuit (30) includes two push-pull amplifier circuits (31 and 41). A first push-pull amplifier circuit (31) has a pair of bipolar transistors (33 and 34) connected in a cascode circuit configuration and a second pair of bipolar transistors (35 and 36) connected in a cascode circuit configuration. In addition, the second push-pull amplifier circuit (41) has a first pair of bipolar transistors (43 and 44) connected in a cascode circuit configuration and a second pair of bipolar transistors (45 and 46) connected in a cascode circuit configuration. The channel distortion and gain response of the amplifier circuit (30) are significantly improved by the push-pull amplifier circuits (31 and 41).

REFERENCES:
patent: 4701716 (1987-10-01), Poole
patent: 5047732 (1991-09-01), Tanaami et al.
patent: 5066925 (1991-11-01), Freitag
patent: 5420537 (1995-05-01), Weedon et al.
Kantner, "Transistorized Audio Amplifier" IBM Technical Disclosure Bulletin, vol. 3, No. 1, p. 33, Jun. 1960.

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