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Mutually-Referenced Current Switches

IP.com Disclosure Number: IPCOM000058267D
Original Publication Date: 1988-Sep-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Wong, RC [+details]

Abstract

Circuitry has been proposed to allow input signals to be referenced against each other on semiconductor chips. The configuration uses fewer circuits than do conventional approaches, thereby using less chip area with a reduction in chip costs. (Image Omitted) In conventional circuitry, input signals swing relative to a reference voltage, VR, so that the current is steered so as to provide the required Boolean function. The VR is generated by a constant voltage source or generated by complementing the input signal. The proposal suggests that the VR need not be generated independently. A proposed mutually-referenced current switch (MRCS) is indicated in Fig. 1. Signal A serves as the VR for BB which also serves as the VR for A.