Low impedance buffer circuit

Details Low impedance buffer circuit Low impedance buffer circuit

1989-07-19

1990-09-25

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330264, 330268, H03F 326

Patent

active

049596233

ABSTRACT:
A low impedance class AB buffer stage in complementary transistor technology has its quiescient current stabilized and its operation thereby made more reliable by means of suitable error op-amps that are supplied with transistor feedback loops which are connected to the stage's output terminal through resistors. In addition, for full rail-to-rail output voltage capability, transistor switching devices are added to turn off current through either of the resistors when the output voltage approaches the voltage of either power rail, and also a pair of serially rail-to-rail connected transistor is connected in parallel with the feedback loops.

REFERENCES:
patent: 4306199 (1981-12-01), Kondou
Paul R. Gray and Robert G. Meyer, Analysis and Design of Analog Intergrated Circuits, Second Edition (1984), pp. 757-760.

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