Rail-to-rail CMOS operational amplifier

Details Rail-to-rail CMOS operational amplifier Rail-to-rail CMOS operational amplifier

1989-10-13

1991-04-09

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330255, 330258, 330311, H03F 345

Patent

active

050068172

ABSTRACT:
A CMOS operational amplifier comprises an output gain stage including output transistors coupled between the rails so that for a given amount of current, the output transistors have rail-to-rail gate-to-source voltages. The output transistors can be made smaller in size with the output stage being capable of driving a small resistive load with minimal signal distortion.

REFERENCES:
De La Plaza et al., "Power Supply Rejection in Differential Switched-Capacitor Filters", IEEE Journal of Solid-State Circuits, vol. SC-19, No. 6, Dec. 1984, pp. 912-918.

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