Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Combining of plural signals
Reexamination Certificate
2006-05-09
2006-05-09
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Combining of plural signals
C327S359000, C455S323000, C455S333000
Reexamination Certificate
active
07042272
ABSTRACT:
A transconductance amplifier (620) includes four transistors each operating in saturation and strong inversion. A first transistor (622) has a first current electrode and a control electrode both receiving an input voltage, and a second current electrode coupled to a power supply voltage terminal. A second transistor (624) has a first current electrode, a control electrode coupled to the first current electrode of the first transistor (622), and a second current electrode coupled to the power supply voltage terminal. A third transistor (626) has a first current electrode for providing a negative differential current, a control electrode for receiving a bias voltage, and a second current electrode coupled to the first current electrode of the first transistor (622). A fourth transistor (628) has a first current electrode for providing a positive differential current, a control electrode for receiving the bias voltage, and a second current electrode coupled to the first current electrode of the second transistor (624).
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Le Dinh T.
Silicon Laboratories Inc.
Toler Larson & Abel, LLP
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