Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1997-05-19
1998-10-20
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327543, G05F 110
Patent
active
058252363
ABSTRACT:
A CMOS bias circuit capable of operating down to a supply voltage equal to the sum of the threshold voltage and the saturation voltage. It generates a threshold referenced bias voltage which is independent of the supply voltage. This bias voltage is equal to the gate source voltage of a transistor which supplies a current equal to the gate-source voltage of another transistor divided by the resistance of a feedback resistor. Via the feedback resistor, changes in the supply voltage cause counteracting changes in the gate-source voltages of the transistors, resulting in a bias voltage which is substantially constant with changing supply voltage.
REFERENCES:
patent: 5216291 (1993-06-01), Seevinck et al.
P.R. Gray and R.G. Meyer, Analysis and Design of Analog Integrated Circuits, Second Edition, Wiley, New York, 1984, Fig. 4.24A.
Du Plessis Monuko
Seevinck Evert
Biren Steven R.
Tran Toan
U.S. Philips Corporation
Zweizig Jeffrey
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