べき乗変換ICの低電源電圧化と回路規模の縮小に向けた新しい回路構成の提案

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2022/07/01

タイトル(英語): Proposal of Circuit Configuration to Reduce Power Supply Voltage and Circuit Scale for CMOS Exponentiation Conversion IC Utilizing Weak Inversion Operation

著者名: 松井　文也（東洋大学 理工学部 電気電子情報工学科），西山　直哉（東洋大学大学院 理工学研究科 電気電子情報専攻），佐野　勇司（東洋大学大学院 理工学研究科 電気電子情報専攻）

著者名(英語): Fumiya Matsui (Department of Electrical, Electronic and Communications Engineering, Faculty of Science and Engineering, Toyo University), Naoya Nishiyama (Graduate School of Science and Engineering, Course of Electricity, Electronics and Communications, Toyo University), Yuji Sano (Graduate School of Science and Engineering, Course of Electricity, Electronics and Communications, Toyo University)

キーワード: 信号変換回路，サブスレッショルド，非線形補正，IoT，べき乗関数　　signal conversion circuit，subthreshold，nonlinearity compensation，IoT，exponentiation function

要約(英語): We proposed elemental technique for reducing power supply voltage and circuit scale for CMOS exponentiation conversion IC utilizing weak inversion operation to mount it on microcomputer chip. This IC implements to change the power exponent to any value by amplifying with adjusting gain after converting signal logarithmically, and finally converting it exponentially. We showed that the circuit scale can be reduced to several tenth times in order to generate a weak inversion current by cascading multiple stages of current-dividing current mirror circuits. Due to this current mirror circuit, circuit scale was reduced to 34.4%. We also proposed an exponential converting circuit that can halve the input voltage by using one pair of weak inversion MOSFETs. However, the proposed control method of the exponential value by utilizing the substrate effect was found to have about 8% of narrow control range. Although measured result shows that this IC does exponentiation conversion, power exponent value was 56% smaller than simulation result.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.142 No.7 （2022） 特集：2021年電子・情報・システム部門大会

本誌掲載ページ: 693-699 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/142/7/142_693/_article/-char/ja/