CMOS integrated mid-supply voltage generator

Details CMOS integrated mid-supply voltage generator CMOS integrated mid-supply voltage generator

1992-04-01

1994-04-12

Beha, Jr., William H.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323281, 323314, G05F 326

Patent

active

053028880

ABSTRACT:
A CMOS on chip mid-rail voltage generation circuit is provided for an analog ground reference. A voltage divider establishes a current path between the high and low rail, and supplies a mid-level voltage to one input of a differential amplifier. A pair of series connected field effect transistors are also connected between the high and low voltage rails, with their common connection providing the input to the other input of the differential amplifier. A pair of open loop output transistors are also coupled in series between the high and low voltage rails, and each has their gate coupled to one of the series connected pair, and is also matched to that pair.

REFERENCES:
patent: 4812735 (1989-03-01), Sawada et al.
patent: 4906914 (1990-03-01), Ohsawa
patent: 4954769 (1990-09-01), Kalthoff
patent: 5027053 (1991-06-01), Ohri et al.
patent: 5030848 (1991-07-01), Wyatt
patent: 5146152 (1992-09-01), Jin et al.

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