CMOS voltage controlled current source

Details CMOS voltage controlled current source CMOS voltage controlled current source

1974-09-11

1976-10-05

Mullins, James B.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 28, 330 30D, H03F 316

Patent

active

039847802

ABSTRACT:
A CMOS voltage controlled current source is described for furnishing current to a load in a charging mode and to receive current from a load in a discharging mode of operation. This bi-lateral current source is voltage controlled and provides a current which is proportional to the applied voltage. The current flow into, and out of the current source changes in a linear fashion and varies proportional to the input control voltage. This bi-lateral current source is made from all CMOS devices.

REFERENCES:
patent: 3696305 (1972-10-01), Mitchell et al.
patent: 3715693 (1973-02-01), Fletcher
Watson, "Testing Gate-Leakage Current in FETS" Electronic Engineering, June 1972, pp. 53-55.
Integrated Circuits, RCA Institutes copyright 1969 p. 3.24.
Thompson, "A Very High Input Impedance Buffer Using Field Offset Transistors," Electronic Engineering, June 1966, pp. 370-373.
Towers, "Balanced Transistor D.C. Amplifiers," Wireless World, Aug. 1968, pp. 269-274.

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