Circuits having precision voltage clamping levels and method

Details Circuits having precision voltage clamping levels and method Circuits having precision voltage clamping levels and method

2008-05-13

2008-05-13

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

C326S031000, C326S082000, C327S108000, C327S180000

Reexamination Certificate

active

07372291

ABSTRACT:
A slew rate control circuit includes a receiver for receiving input signals and an output generator for generating output signals based on the input signals. The slew rate control circuit also includes an electrical interconnection coupling an output of the receiver and an input of the output generator. In addition, the slew rate control circuit includes a voltage clamp for clamping a voltage on the electrical interconnection between two known voltage reference levels. The voltage clamp may include a first current source for providing driving capacity to a driver circuit to prevent the voltage on the electrical interconnection from falling below one known voltage reference level. The voltage clamp may also include a second current source and a third current source for providing sinking capacity to the driver circuit to prevent the voltage on the electrical interconnection from rising above the other known voltage reference level.

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