Transistor circuit

Details Transistor circuit Transistor circuit

1990-01-19

1991-02-12

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, 330258, 330259, H03F 345

Patent

active

049927558

ABSTRACT:
A transistor circuit comprising a first differential amplifier which is composed of a differential pair and a current mirror. The transistor circuit further comprises a second differential amplifier which measures a differential offset voltage in the first differential amplifier and reduces this offset voltage by means of common mode current feedback. The transistor circuit thus provides a stable amplifier having a high speed and a low offset voltage which can be used advantageously in a logic output buffer so that, for example, an ECL output buffer can be realized in CMOS.

REFERENCES:
patent: 4427903 (1984-01-01), Sugimoto
Allen et al., "CMOS Analog Circuit Design", p. 274, Published by Holt, Rinehart and Winston, Inc.

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