Amplifier with actively clamped load

Details Amplifier with actively clamped load Amplifier with actively clamped load

1993-03-24

1995-04-04

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

Differential sensing

36518906, 327 52, 327309, G11C 700, G01R 1900

Patent

active

054043336

ABSTRACT:
An amplifier is arranged with an actively clamped load. In a differential amplifier, a pair of emitter-coupled transistors has loads connected between the collectors and a voltage supply. Separate clamping transistors have their collector-emitter paths connected across respective ones of the loads. A clamping control circuit, responsive to an input signal, produces a variable control signal to clamp output signal swings across the loads. A similar clamping control circuit can be used with a single-ended amplifier. Such an amplifier having an actively clamped load is useful in sense amplifier circuit arrangements in semiconductor memory arrangements used in data processing systems.

REFERENCES:
patent: 4604533 (1986-08-01), Miyamoto et al.
patent: 4862421 (1989-08-01), Tran
patent: 4899311 (1990-02-01), Petschauer et al.
patent: 5012450 (1991-04-01), Mattausch et al.
patent: 5016214 (1991-05-01), Laymoun
patent: 5091886 (1992-02-01), Miyawaki et al.
patent: 5144171 (1992-09-01), Huard

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