べき乗変換ICの電圧入力化と回路面積の縮小

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: 2023/07/01

タイトル(英語): Enabling Signal Input and Output by Voltage and Reducing Circuit Area for Exponentiation Conversion Circuit

著者名: 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），松井　文也（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): Naoya Nishiyama (Graduate School of Science and Engineering, Course of Electricity, Electronics and Communications, Toyo University), Fumiya Matsui (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，べき乗変換　　signal conversion circuit，subthreshold，nonlinearity，IoT，exponentiation function

要約(英語): We proposed exponentiation conversion circuit utilizing weak inversion operation by circuit design using practical voltage input and output with reducing circuit area. Because conventional circuit used input and output signal current and needed to convert signal current to signal voltage, it is not practical. Conventional circuit enabled exponentiation conversion by converting input signal current logarithmically, amplifying by power exponent value and converting signal to current exponentially. In order to enable convert small signal current in weak inversion region to 8bit 256 steps signal voltage with 10 mV per step, it is necessary to mount a few MΩ current voltage conversion resistance and difficult to mount on IC. Therefore, we reduced area of current voltage conversion resistance by using mult step current mirror circuit to amplify current. In addition, we proposed method to suppress MOSFET area increasing as side effect with decreasing of current density and completed the IC design. Feasibility of this IC will be confirmed by prototype IC soon.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.143 No.7 （2023） 特集：2022年電子・情報・システム部門大会

本誌掲載ページ: 626-633 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/143/7/143_626/_article/-char/ja/