Semiconductor device containing voltage converting circuit and o

Details Semiconductor device containing voltage converting circuit and o Semiconductor device containing voltage converting circuit and o

1991-05-06

1994-02-01

Mullins, James B.

Static information storage and retrieval

Read/write circuit

Including reference or bias voltage generator

307 65, 365226, G11C 1300

Patent

active

052837629

ABSTRACT:
The semiconductor memory device contains a voltage converting circuit. The voltage converting circuit includes a plurality of reference voltage generating circuits for respectively generating a plurality of reference voltages at different levels. The voltage converting circuit further includes a differential amplifier, an output circuit, a switching circuit and a switching control circuit. The switching control circuit and the switching circuit select one of the plurality of reference voltages and supply the selected reference voltage to the differential amplifier in response to an externally applied control signal. The differential amplifier and the output circuit apply the supplied reference voltage to an internal circuit.

REFERENCES:
patent: 4638175 (1987-01-01), Bradford et al.
patent: 4780854 (1988-10-01), Watanabe et al.
patent: 4806788 (1989-02-01), Tobita
patent: 5065091 (1991-11-01), Tobita
patent: 5153452 (1992-10-01), Iwamura et al.
IEEE Journal of Solid-State Circuits, vol. SC-22, No. 3, Jun. 1987, "A New On-Chip Voltage Converter for Submicrometer High-Density DRAM's", by Tohru Furuyama et al., pp. 437-441.
German publication "Salhofer Electronik", Hauptkatalog 91/92, p. 329.

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