Voltage independent symmetrical current source with cross-couple

Details Voltage independent symmetrical current source with cross-couple Voltage independent symmetrical current source with cross-couple

1994-01-13

1995-08-29

Stephan, Steven L.

Electricity: power supply or regulation systems

Self-regulating

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

330257, G05F 316, H03F 345

Patent

active

054463688

ABSTRACT:
A symmetrical current source 10 has a pnp current source 11 including four npn transistors Q1-Q4 and a pnp output transistor Q28 and an npn current sink 12 including pnp transistors Q5-Q8 and an output transistors Q29. In current source 11 cross coupled transistors Q3, Q4 establish a predetermined bias for source 11; cross coupled transistors Q7, Q8 establish a predtermined bias for sink 12.

REFERENCES:
patent: 4479086 (1984-10-01), Nagano
patent: 4682098 (1987-07-01), Seevinck et al.
patent: 4947103 (1990-08-01), Abdi et al.
patent: 4958122 (1990-09-01), Main
patent: 4988954 (1991-01-01), Stern et al.
patent: 5049653 (1991-09-01), Smith et al.
patent: 5113147 (1992-05-01), Klein
"Analysis and Design of Analog Integrated Circuits," 2nd Edition, Paul R. Gray and Robert G. Meyer, 1977, pp. 233-237.

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