Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Converging with plural inputs and single output
Patent
1997-01-02
1998-06-16
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Converging with plural inputs and single output
327408, 327411, H03K 1756
Patent
active
057677301
ABSTRACT:
The collector of the first transistor having the base to which the first signal input is supplied, is connected to the collector of the second transistor having the base to which the second signal input is supplied. The diode-connected third transistor is connected between the emitter of the first transistor and the output node, and the diode-connected fourth transistor is connected between the emitter of the second transistor and the output node. The first current mirror circuit supplies the current flowing in the constant current source to the emitters of the first and third transistors when the fifth transistor is in the ON state. The second current mirror circuit supplies the current flowing in the constant current source to the emitters of the second and fourth transistors when the sixth transistor is in the ON state. The third current mirror circuit sets the current flowing in the output node equal to the current flowing between the first power node and the collectors of the first and second transistors.
REFERENCES:
patent: 4978924 (1990-12-01), Schuster
patent: 5055705 (1991-10-01), Hall
Callahan Timothy P.
Kabushiki Kaisha Toshiba
Luu An T.
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