MOSFET controlling multiplier

Details MOSFET controlling multiplier MOSFET controlling multiplier

1992-06-18

1993-08-17

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including field effect transistor

307501, H03F 316

Patent

active

052372898

ABSTRACT:
A MOSFET controlling multiplier for obtaining the precise function of the operational multiplication by offsetting the offset voltage of MOSFET to remove the non-linear current of MOSFET, utilizing symmetrical voltage sources and a current mirror circuit is disclosed. The MOSFET controlling multiplier utilizes a MOSFET linear means for linearly varying the output current I to a node A in accordance with an input voltage from an input voltage source Vg and a symmetrical input voltage from voltage sources Vx and -Vx. The input voltage from the input voltage source Vg is operatively associated with the symmetrical input voltage from the voltage sources Vx and -Vx. An impedance element Z outputs a voltage Vo, with the impedance element Z being connected to the node A of the MOSFET linear means and the ground.

REFERENCES:
patent: 4760349 (1988-07-01), Park et al.
patent: 4825174 (1989-04-01), Vella-Coleiro
New Four-Quadrant CMOS Analogue Multiplier, Electronics letters 19th Nov. 1987, vol. 23, pp. 1268-1270.
A20-V Four-Quad CMOS Analogue Multiplier, IEEE Journal of Solid-State Circuit, vol. SC-20, No. 6, pp. 1158-1167, Dec. 1985.

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