Amplification circuit

Details Amplification circuit Amplification circuit

1997-08-06

1999-03-09

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330252, H03F 345

Patent

active

058806393

ABSTRACT:
In order to satisfy both signal stability and high-speed operation of an amplification circuit, the amplification circuit includes first and second differential means, a first driving means for driving to flow a current from an output terminal to a low potential power supply at a low impedance on the basis of an output from the first differential means, a first constant current means connected in parallel with the first driving means to flow a current from the output terminal to the low potential power supply at a high impedance, a second driving means for driving to flow a current from a high potential power supply to the output terminal at a low impedance on the basis of an output from the second differential means, and a second constant current means connected in parallel with the second driving means to flow a current from the high potential power supply to the output terminal at a high impedance, wherein the noninverting input terminal of the first differential means has a lower offset voltage than that of the inverting input terminal thereof, and the noninverting input terminal of the second differential means has a higher offset voltage than that of the inverting input terminal thereof.

REFERENCES:
patent: 4766394 (1988-08-01), Yukawa

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