Emitter Width Effect On Early Voltage In Bipolar Transistors: Modeling The Emitter Width Effect In BJT Transistors - Softcover

Peralta, Mike

Softcover

ISBN 10: 1725972816 ISBN 13: 9781725972810

Publisher: CreateSpace Independent Publishing Platform, 2018

Synopsis

Narrow emitters in polysilicon emitter bipolar transistors have been found to result in a larger base width WB, and a larger peak base doping concentration NBPEAK. This in turn cause the VBIC and Mextram Early parameters VER and VEF to increase. This increase with narrow emitters is also true for the Gummel-Poon Early parameters VAR and VAF.

The VBIC and Mextram Early parameters, VER or VEF, for an arbitrary emitter width can be modeled as the weighted average of a narrow emitter Early voltage measurement and a wide emitter Early voltage measurement. The weighted average Early voltage is found to be insensitive to the selection of the narrow emitter width as long the selected narrow emitter width encompasses enough of the emitter-base periphery effects.

Edition details

• Publisher: CreateSpace Independent Publishing Platform
• Publication date: 2018
• ISBN 10: 1725972816
• ISBN 13: 9781725972810
• Binding: Paperback
• Language: English
• Number of pages: 30