Accession Number : AD0777007

Title :   LSI Digital Subsystems for Communications.

Descriptive Note : Final rept. 1 Jul 71-28 Sep 73,


Personal Author(s) : Norwalt,R. ; Clarrocca,M. ; Bergman,R.

Report Date : MAR 1974

Pagination or Media Count : 138

Abstract : The report describes work relating to the application of LSI (large scale integration) technology. Three distinct tasks have been defined. Task A involves the combination of a silicon-on-sapphire/large scale integration (SOS/LSI) logic circuit with a voltage controlled oscillator (VCO), a phase comparator, and a crystal reference oscillator to provide a complete digital frequency synthesizer. Task B relates to the development of a monolithic CMOS LSI Digital Time Division Crosspoint Switch array. Task C consists of the development, test, and delivery of sample quantities (20) of a P-MOS LSI array that implements a portion of the digital logic of a radiation measuring instrument. These three tasks represent demonstration of several distinct applications of the MOS LSI technology. Custom design techniques were used for Task A which was implemented in the very high speed, low power CMOS/SOS technology. Standard cell design automation techniques were used in the design phase of the bulk silicon CMOS LSI array described in Task B. A third approach using the gate Universal P-MOS LSI array represents yet another facet of the MOS technology. (Modified author abstract)

Descriptors :   *Communication equipment, *Digital systems, *Integrated circuits, Logic circuits, Metal oxide semiconductors, Frequency synthesizers, Switching circuits, Radiation measuring instruments

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE