CMOS differential amplifier circuit utilizing a CMOS current sin

Details CMOS differential amplifier circuit utilizing a CMOS current sin CMOS differential amplifier circuit utilizing a CMOS current sin

1975-01-29

1976-06-01

Rolinec, R. V.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 22, 330 35, H03F 316, H03F 345

Patent

active

039612791

ABSTRACT:
A control circuit comprising several CMOS transistors operating in cooperation with certain dimension relationships among the CMOS transistors to provide a first reference voltage to the gates of two current sourcing transistors and to provide a second reference voltage to the gate of a current sinking transistor, the two reference voltages being related, resulting in a desired tracking between the current sinking transistor and the two current sourcing transistors. The current sink transistor operates to current limit at a value which is approximately twice the current limiting value of either of the two current source transistors such that a substantial improvement in circuit performance is obtained.

REFERENCES:
patent: 3660773 (1972-05-01), Free
patent: R27351 (1972-05-01), McGraw et al.

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