Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1996-06-20
1997-10-21
Berhane, Adolf
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
327538, G05F 316
Patent
active
056800380
ABSTRACT:
A high-swing current mirror includes a cascode current source and a current source bias circuit. The current source includes first and second bias terminals and an output terminal. The bias circuit includes transistors M1, M2A, M2B and M3A. Transistor M1 has a gate, source, and drain, with the gate coupled to the drain. Transistor M2A has a gate, source, and drain, with the gate and source of transistor M2A coupled to the gate and source, respectively, of transistor M1. Transistor M2B has a gate and drain coupled to one another and to the second bias terminal and a source coupled to the drain of transistor M2A. Transistor M3A has a gate and drain coupled together and to the first bias terminal and a source coupled to the sources of transistors M1 and M2A. The transistors in the cascode current source and current source bias circuit have ratios of device transconductance parameters such that the cascode current source remains in saturation to provide the highest possible voltage swing at the output terminal.
REFERENCES:
patent: 3875430 (1975-04-01), Prak
patent: 4281261 (1981-07-01), Adam
patent: 4297646 (1981-10-01), LoCascio et al.
patent: 4345217 (1982-08-01), Pace
patent: 4412186 (1983-10-01), Nagano
patent: 4471292 (1984-09-01), Schenck et al.
patent: 4528494 (1985-07-01), Bloomer
patent: 4550284 (1985-10-01), Sooch
patent: 4580088 (1986-04-01), Bloomer
patent: 4583037 (1986-04-01), Sooch
patent: 4591804 (1986-05-01), van Tuijl
patent: 4983929 (1991-01-01), Real et al.
patent: 5003198 (1991-03-01), Bell
patent: 5099205 (1992-03-01), Lewyn
patent: 5311115 (1994-05-01), Archer
patent: 5359296 (1994-10-01), Brooks et al.
patent: 5373228 (1994-12-01), Holle
Heim, P. et al., "MOS cascode-mirror biasing circuit operating at any current level with minimal output saturation voltage," Electronics Letters, vol. 31, No. 9, 27 Apr. 1995, pp. 690-691.
Zarabadil, Seyed et al., "Very-High-Output-Impedance Cascode Current Sources/Current Mirrors/Transresistance Stages and Their Applications," International Journal of Circuit Theory and Applications, vol. 20, (1992), pp. 639-648.
Yang, Howard C. et al., "An Active-Feedback Cascode Current Source," IEEE Transactions on Circuits and Systems, vol. 37, No. 5, May 1990, pp. 644-647.
Davidson J. Courtney, "MOS Current Sources--A Comparison and Evaluation," IEEE, (1984), pp. 1215-1219.
Berhane Adolf
LSI Logic Corporation
LandOfFree
High-swing cascode current mirror does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-swing cascode current mirror, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-swing cascode current mirror will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1009526