Importance

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Abstract

A CMOS current steering switch circuit includes a switch formed of a pair of transistors of one conductivity type having a source terminal connected to a node to which a constant current source is also connected. The drain terminals of the transistors comprise the switch circuit's output terminals. The transistor's gate terminals are controlled by a pair of buffers comprising transistors of the other conductivity type that receive differential input signals that control the switch circuit. The buffers limit the voltage swings of the control signals applied to the gate terminals so that the transistors comprising the switch are not both off at the same time.

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First Claim