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Hybrid overcurrent controller implemented using GaAs MESFET technology
A KALAM
Published in -
1999
Volume: 19
   
Issue: 1
Pages: 25 - 30
Abstract
This paper describes the design and performance of a very high speed, low power multi-channel hybrid overcurrent controller chip implemented using gallium arsenide (GaAs) technology. The mixed analog-digital integrated circuit uses source coupled MESFET logic for analog components and GaAs merged logic for digital components. The design of a multi-bit data acquisition circuit is based on a flash analog-to-digital converter requiring only 2 (n-1) comparators as compared to (2 n-1) comparators for a standard n-bit flash converter. The design is module oriented, thus enabling easy paralleling into multi-bit circuit. A cellular design methodology was used to give the design flexibility, which allows it to be easily cascaded into multi-bit chip. The chip was implemented with 797 GaAs devices and dissipated 236.33 milliwatts of power. The results indicate large logic swings resulting in excellent noise margins and a very high-speed operation enabling reliable multi-function operation of this chip.
About the journal
JournalJournal of Electrical and Electronics Engineering, Australia
Publisher-
ISSN0725-2986