Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Combining of plural signals
Reexamination Certificate
2008-07-15
2008-07-15
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Combining of plural signals
C327S357000
Reexamination Certificate
active
07400184
ABSTRACT:
A current mode multiplier circuit is provided based on the square root voltage-current relationship of an MOS transistor. The circuit includes first, second and third MOS transistors with a common aspect ratio, and first and second current sources that respectively provide first and second input currents that represent first and second factors to be multiplied. The first and second MOS transistors produce first and second voltages as a function of the first and second input currents, and the third MOS transistor produces a third current as a function of the first and second voltages. In response to the third current, the circuit produces a product signal that represents a product of the first and second factors.
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SiTel Semiconductor B.V.
Tra Quan
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