Omar Wing 
Gallium Arsenide Digital Circuits 

Gallium Arsenide technology has come of age. Ga As integrated circuits are available today as gate arrays with an operating speed in excess of one Gigabits per second. Special purpose Ga As circuits are used in optical fiber digital communications systems for the purpose of regeneration, multiplexing and switching of the optical signals. As advances in fabrication and packaging techniques are made, the operat- ing speed will further increase and the cost of production will reach a point where large scale application of Ga As circuits will be economical in these and other systems where speed is paramount. This book is written for students and engineers who wish to enter into this new field of electronics for the first time and who wish to embark on a serious study of the subject of Ga As circuit design. No prior knowledge of Ga As technology is assumed though some previous experience with MOS circuit design will be helpful. A good part of the book is devoted to circuit analysis, to the extent that is possible for non- linear circuits. The circuit model of the Ga As transistor is derived from first principles and analytic formulas useful in predicting the approxi- mate circuit performance are also derived. Computer simulation is used throughout the book to show the expected performance and to study the effects of parameter variations.