Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Combining of plural signals
Patent
1997-10-17
2000-03-28
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Combining of plural signals
327120, 327357, 327513, G06F 744
Patent
active
060437006
ABSTRACT:
A bipolar analog multiplier with a greatly reduced output sensitivity to temperature. The multiplier uses the difference between the multiplier input voltages and the reference voltages to generate currents. Voltages which are logarithmically dependent on the generated currents are developed and applied to inputs of bipolar variable transconductance stages. Circuits are used to reduce ringing at the output of the multiplier.
REFERENCES:
patent: 4019118 (1977-04-01), Harwood
patent: 5319267 (1994-06-01), Kimura
patent: 5699080 (1997-12-01), Hatanaka
patent: 5883539 (1999-03-01), Kimura
National Semiconductor Corporation
Wells Kenneth B.
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