An Improved Current-Mode Squarer/Divider Circuit for Automotive Applications

Xin YIN  Peter OSSIEUR  Tine De RIDDER  Johan BAUWELINCK  Xing-Zhi QIU  Jan VANDEWEGE  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E91-C   No.2   pp.232-234
Publication Date: 2008/02/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e91-c.2.232
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Electronic Circuits
Keyword: 
current-mode circuits,  translinear,  squarer/divider circuit,  BiCMOS,  

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Summary: 
A current-mode squarer/divider circuit with a novel translinear cell is presented for automotive applications. The proposed circuit technique increases the accuracy of the squarer/divider function with better input dynamic range and temperature insensitivity. Simulation results show that the variation of the output current is within ±0.2% over the temperature range from -40 to 140.