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The Super-Multi-Tanh Technique for Bipolar Linear Transconductance Amplifiers
Katsuji KIMURA
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E79-A
No.2
pp.190-198 Publication Date: 1996/02/25 Online ISSN:
DOI: Print ISSN: 0916-8508 Type of Manuscript: Special Section PAPER (Special Section on Analog Technologies in Submicron Era) Category: Keyword: the multi-tanh technique, the emitter area ratio unbalance technique, the super-multi-tanh technique, linear transconductance element, OTA, bipolar,
Full Text: PDF>>
Summary:
A novel circuit design technique for bipolar linear transconductance amplifiers is presented. A triple-tail cell, which consists of three emitter-common transistors biased by a single tail current, is exchangeable with an emitter-coupled pair in the multi-tanh cell, such as a multi-tanh doublet, a multi-tanh triplet or a multi-tanh quad. Therefore, the multi-tanh technique is further theoretically expanded to the super-multi-tanh technique. In this paper, the super-multi-tanh technique is proposed and discussed, and furthermore, a super-multi-tanh doublet is verified with bipolar transistor-arrays and discrete resistors on a breadboard.
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