4-Quadrant multiplier

Details 4-Quadrant multiplier 4-Quadrant multiplier

1977-03-28

1978-07-18

Ruggiero, Joseph F.

Boots, shoes, and leggings

307229, 307304, 328160, 333 18, G06G 7163

Patent

active

041019660

ABSTRACT:
An operational amplifier uses p- and n-channel enhancement type MOSFETs as variable input resistors on the inverting and non-inverting legs, respectively, of the amplifier, and the sources and gates of the MOSFETs are tied together. By using V.sub.S, the source-to-ground voltage, and V.sub.GS, the gate-to-source voltage, as input signals, the device will perform 4-quadrant multiplication at operating frequencies as high as 400MHz.

REFERENCES:
patent: 3368066 (1968-02-01), Miller et al.
patent: 3448297 (1969-06-01), Rhodes
patent: 3473043 (1969-10-01), James
patent: 3562553 (1971-02-01), Roth
patent: 3636332 (1972-01-01), Nelson et al.
patent: 3689752 (1972-09-01), Gilbert

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