Circuit for controlling the voltages between well and sources of

Details Circuit for controlling the voltages between well and sources of Circuit for controlling the voltages between well and sources of

1995-03-24

1997-10-28

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327530, 327538, H03K 301

Patent

active

056821182

ABSTRACT:
The control circuit includes a reference MOS transistor (24) on which preermined operating characteristics are imposed. Circuitry (21, 22, 23) is provided for comparing an operating characteristic of the transistor (24) with a reference value (V.sub.tnref) so as to produce a control voltage. This voltage, after adaptation, is applied to the transistor (24) so as to fix the threshold voltage (V.sub.th) thereof, in such a way as to maintain the operating characteristics of the transistor (24). This same threshold voltage is then imposed on all the transistors of the logic circuit with which the control circuit is associated. This control circuit makes it possible particularly to reduce the consumption of said logic circuit.

REFERENCES:
patent: 4435652 (1984-03-01), Stevens
patent: 4533846 (1985-08-01), Simko
patent: 4670670 (1987-06-01), Shoji
patent: 4791318 (1988-12-01), Lewis et al.
patent: 5099146 (1992-03-01), Miki et al.
patent: 5103277 (1992-04-01), Caviglia et al.
Sedra et al., "Microelectronic Circuits", 1991, FIG. 6.46.

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