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MESFET Differential Current Switch Comparator Circuit

IP.com Disclosure Number: IPCOM000058006D
Original Publication Date: 1988-Aug-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Ewen, JF Rogers, D [+details]

Abstract

A technique is described whereby a MESFET differential current switch comparator circuit provides a means to enhance the operational gain by employing positive feedback. It also provides a means to improve noise margins or to implement a high-speed comparator circuit. Typically, differential current switch (DCS) circuits are well suited for certain logic functions, particularly latches, Exclusive-Or gates and important analog functions, such as receiver circuits, as used in fiber optic communication links. When used in analog circuitry, the analog voltage must be converted to a logic signal and is typically accomplished by means of a comparator circuit.