Substrate bias voltage generator having current ability based on

Details Substrate bias voltage generator having current ability based on Substrate bias voltage generator having current ability based on

1992-11-27

1994-12-27

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

36518909, 365226, 327541, 327546, H03K 301, G11C 1140

Patent

active

053768400

ABSTRACT:
An LSI including a voltage drop circuit for receiving a voltage from an external power source and generating an internal power source voltage, a substrate biasing voltage generator circuit for generating a substrate biasing voltage, and a power on circuit for monitoring a voltage rising rate of the external power source and producing a control signal. The substrate biasing voltage generator circuit operates, in accordance with conditions of the control signal, to generate the substrate bias voltage having a first current capability based on the external power voltage or the substrate bias voltage having a second current capability based on the internal power source voltage. Thus, the LSI eliminates delay of start of operation of the LSI and reduces power consumption by the LSI due to a delay in the increase of the internal power source voltage which operates the substrate biasing voltage generator circuit.

REFERENCES:
patent: 4961007 (1990-10-01), Kumanoya et al.
patent: 5041739 (1991-08-01), Goto
patent: 5146110 (1992-09-01), Kim et al.

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