NPN Transistor current mirror circuit

Details NPN Transistor current mirror circuit NPN Transistor current mirror circuit

1984-01-03

1985-10-08

Beha, Jr., William H.

Electricity: power supply or regulation systems

Self-regulating

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

330257, H03F 345

Patent

active

045463077

ABSTRACT:
A current mirror using NPN transistors is described for use in PN junction isolated monolithic integrated circuits. A preferred embodiment operates at high accuracy over a wide range of output currents. It also operates at a relatively high signal frequency. An application in a charge pump, suitable for use in a digital phase locked loop, is detailed.

REFERENCES:
patent: 3925718 (1975-12-01), Wittlinger
patent: 4100436 (1978-07-01), van de Plessche
patent: 4158178 (1979-06-01), Schade
Ellis, "Current Regulated Reference Diode", IBM Tech. Discl. Bul., vol. 15, No. 8, p. 2478, Jan. 1973.

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