Low volatage output stage with improved output drive

Details Low volatage output stage with improved output drive Low volatage output stage with improved output drive

1996-01-16

1997-08-19

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330263, H03F 330

Patent

active

056592663

ABSTRACT:
A class AB low voltage output stage with improved current drive capability where the signal input to the stage modulates the base drive currents of both an output transistor sourcing current to a load and an output transistor sinking current from the load. Coupling the base drive currents by means of the input amplifier permits higher drive currents to be obtained for the output transistors without increasing the quiescent current of the circuit.

REFERENCES:
patent: 4570128 (1986-02-01), Monticelli
patent: 5442320 (1995-08-01), Kunst et al.
patent: 5444419 (1995-08-01), Honda
patent: 5521553 (1996-05-01), Butler
Smith, Doug, Koen, Mike and Witulski, Arthur F., "Evolution of High-Speed Operational Amplifier Architectures", IEEE Journal of Solid-State Circuits, vol. 29, pp. 1166-1179, Oct. 1994.

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