Semiconductor substrate bias circuit

Details Semiconductor substrate bias circuit Semiconductor substrate bias circuit

Filed on

1989-10-05

Date issued

1991-07-23

Examiner

Miller, Stanley D.

Patent Class

Electrical transmission or interconnection systems

SubClass

Nonlinear reactor systems

SubSubClass

Parametrons

Other Related Categories

3072961, 307304, H03K 3354, H01L 1900, H01L 2704, H01L 2994

Type

Patent

Status

active

Patent number

050346253

Description

ABSTRACT:
A semiconductor substrate bias circuit is disclosed which comprises: first and second substrate biasing means connected in parallel between the substrate and a ground node, for pumping the charges from said substrate to said ground node or in the reverse direction in order to bias said substrate; and a detecting means for selectively enabling said first and second substrate biasing means in accordance with the levels of the substrate bias voltage. The circuit of the present invention is capable of supplying adequate bias voltages depending on the various operating modes, reducing the standby current loss at a standby state, and is suitable for being installed on a VLSI semiconductor chip.

REFERENCES:
patent: 4336466 (1982-06-01), Sud et al.
patent: 4439692 (1984-03-01), Beekmans et al.
patent: 4794278 (1988-12-01), Vajdic

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