Operational amplifier

Details Operational amplifier Operational amplifier

1978-12-01

1981-05-12

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330255, 330257, 330258, 330264, H03F 345, H03F 330, H03F 316

Patent

active

042675170

ABSTRACT:
An operational amplifier is provided with a differential amplifier constructed by MOS transistors and a linear amplifier constructed by MOS transistors and coupled with the differential amplifier. The differential amplifier is supplied with first and second inputs. The output of the operational amplifier is derived from the output of the linear amplifier. A stabilizing circuit, which is coupled with the differential and linear amplifiers, stabilizes the output of the operational amplifier against a variation of the input DC levels to the differential amplifier.

REFERENCES:
patent: 4048575 (1977-09-01), Musa
patent: 4050030 (1977-09-01), Russell
patent: 4152663 (1979-05-01), Van de Sande
Musa et al., "A CMOS Monolithic 31/2 Digit A/D Converter", 1976 IEEE International Solid State Circuits Conference, Feb. 19, 1976 pp. 144-145.

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