Current mirror amplifier circuit and method of driving the same

Details Current mirror amplifier circuit and method of driving the same Current mirror amplifier circuit and method of driving the same

1991-08-26

1993-04-06

Dzierzynski, Paul M.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330 51, 307530, H03F 345

Patent

active

052007103

ABSTRACT:
A current mirror amplifier circuit includes a differential amplifier circuit having first and second nodes for differentially amplifying a pair of complementary input signals in an activation mode. A current mirror circuit is coupled between a first power source and the first and second nodes of the differential amplifier circuit. A switching circuit is coupled between the differential amplifier circuit and a second power source which supplies a second voltage lower than a first voltage supplied by the first power source for switching a mode of the differential amplifier circuit from a standby mode to the activation mode in response to an activation signal. A circuit is coupled between the first power source and the first and second nodes of the differential amplifier circuit for pulling up potentials of the first and second nodes during the standby mode. This circuit is deactivated after the differential amplifier circuit is switched from the standby mode to the activation mode.

REFERENCES:
patent: 4697112 (1987-09-01), Ohtani et al.
patent: 4829266 (1989-05-01), Parnici et al.
patent: 4871979 (1989-10-01), Shearer et al.
patent: 5004986 (1991-04-01), Bohrer
patent: 5089789 (1992-02-01), Tran
"Semiconductor Differential Amplifier", Shuji Murakami, Patent Abstracts of Japan, vol. 11, No. 400 (E-569) (2847), Dec. 26, 1987, JP-A-62159905, Mitsubishi Electric Corp.
"A 15-ns 4-Mb CMOS SRAM", Shingo Aizaki et al., 8107 IEEE Journal of Solid-State Circuits, 25 (1990) Oct., No. 5, New York, pp. 1063-1066.

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