Operational amplifier utilizing FET followers and feed-forward c

Details Operational amplifier utilizing FET followers and feed-forward c Operational amplifier utilizing FET followers and feed-forward c

1986-09-22

1988-01-05

Mullins, James B.

Amplifiers

With amplifier bypass means

330253, H03F 345

Patent

active

047178850

ABSTRACT:
An improved field effect transistor follower circuit includes a transistor having equivalent input capacitance C.sub..pi. and a field-effect-transistor which has a gate electrode coupled to a source of an input signal, a drain coupled to a source of supply voltage, and a source coupled to the base of the transistor. A feed forward capacitor is provided and coupled between the gate and source electrodes of the field effect transistor. An operational amplifier is also disclosed which utilizes junction field-effect-transistor followers including feed forward capacitors.

REFERENCES:
patent: 3379987 (1968-04-01), Volkers
patent: 3562656 (1971-02-01), Bateman
patent: 3987369 (1976-10-01), Yokoyama
patent: 4241314 (1980-12-01), Iwamatsu
patent: 4390852 (1983-06-01), Addis

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