Threshold extracting method and circuit using the same

Details Threshold extracting method and circuit using the same Threshold extracting method and circuit using the same

1995-12-19

1997-09-30

Berhane, Adolf

Electricity: power supply or regulation systems

Self-regulating

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

323315, G05F 316

Patent

active

056729600

ABSTRACT:
A transistor threshold extraction circuit including at least two transistors of the same type each having a control terminal and having essentially a same threshold voltage, each of the two transistors also having first and second main conduction terminals, a current mirror circuit having at least two input-output terminals with the two terminals coupled respectively to the two transistors so as to supply bias currents, a voltage generator connected between the two control terminals, and a feedback path between the control terminals and one of the input-output terminals. An output of the extraction circuit is coupled to one of the control terminals.

REFERENCES:
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patent: 5175489 (1992-12-01), Mizuide
patent: 5311115 (1994-05-01), Archer
patent: 5349286 (1994-09-01), Marshall et al.
patent: 5483196 (1996-01-01), Ramet
IEEE Journal Of Solid-State Circuits, vol. 23, No. 3, Jun. 1988 New York, US, pp. 821-824, Sansen, et al. "A CMOS Temperature-Compensated Current Reference".
IEEE Journal Of Solid-State Circuits, vol. 27, No. 9, Sep. 1992, pp. 1277-1285, Zhenhua Wang "Automatic Vt Extractors, based on a . . . and their Application".
IEE Proceedings G Electronic Circuits & Systems, vol. 3, No. 1, 1979 Stevenage GB, pp. 1-4, Y:P: Tsividis, et al, "Threshold Voltage Generation and Supply Independent Biasing In C.M.O.S. Integrated Circuits".

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