Multiplier circuit having circuit wide dynamic range with reduce

Details Multiplier circuit having circuit wide dynamic range with reduce Multiplier circuit having circuit wide dynamic range with reduce

1994-10-19

1996-05-28

Heyman, John S.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

327350, 323315, G06F 7556

Patent

active

055215440

ABSTRACT:
A multiplier circuit including a first voltage supply for supplying a first voltage; a second voltage supply for supplying a second voltage; and a control section having a first terminal through which an input current flows, a second terminal through which a current equal to or a constant multiple of the input current at the first terminal flows, the first voltage being supplied to the second terminal, a third terminal through which an output current flows, and a fourth terminal through which a current equal to or a constant multiple of the output current at the third terminal. The second voltage is applied to the fourth terminal. The control section controls the output current so that a logarithm of a ratio of an absolute value of the output current to an absolute value of the input current is in proportion to a difference between the first voltage and the second voltage.

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