弱反転動作を活用したCMOSべき乗変換ICの電源電圧の低減

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: 2022/10/01

タイトル(英語): Reduction of Power Supply Voltage for the CMOS Exponentiation Conversion IC Effectively Utilizing Weak Inversion Operation

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，弱反転，べき乗関数，非線形補正，低電源電圧_x000D_　　signal conversion circuit，subthreshold，exponentiation function，nonlinearity compensation，low power supply voltage

要約(英語): In order to compensate the non-linear characteristics in many kinds of electronic devices, the exponentiation conversion circuit that can change the power exponent to any value has been proposed. The exponentiation conversion circuit multiplies the logarithmically converted input signal by the power exponent value to perform exponential conversion. As a result, we can obtain the power function characteristic of the power exponent value. In this paper, we proposed a transconductance circuit that can increase the voltage gain, which decreases with lower power supply voltage. By parallelizing the input and output signal voltage windows with the transconductance circuit, the maximum exponent value was secured to be 2.9, which is equivalent to the conventional value, furthermore the signal dynamic range was 42.7 dB in simulation results. By evaluating its prototype IC with 0.6 μm CMOS process, we confirmed the signal dynamic range was 30.0 dB and maximum power exponent value was 3.4.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.142 No.10 （2022） 特集：電子材料関連技術の最近の進展

本誌掲載ページ: 1081-1090 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/142/10/142_1081/_article/-char/ja/