Wide-range high-linearity current-controlled pulse-width/delay circuits

IEICE Electronics Express

Juing-Huei Su²  Hung-Yih Lin²  Chwan-Lu Tseng³  Yuh-Shyan Hwang¹  Jiann-Jong Chen¹ 

[1] Department of Electronic Engineering, National Taipei University of Technology;Department of Electronic Engineering, Lunghwa University of Science and Technology;Department of Electrical Engineering, National Taipei University of Technology

关键词: PWM circuit;    delay circuit;   

DOI  :  10.1587/elex.2.217

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(8)A wide-range high-linearity current-controlled pulse-width/ delay circuit suitable for current-mode controlled techniques is presented in this paper. The proposed circuit has been fabricated with 0.35µm CMOS 2P4M processes. The chip area is only 0.33mm × 0.12mm. The experimental results show the variation of the output frequency within ±0.2%, the tolerance of duty cycle is less than 0.2%. The current-controlled pulse-width/delay circuit is supply independent and can be operated at 2.5V. The linear range of input current is from 4µA to 277µA, and corresponding duty cycle of pulse-width output is from 1.59% to 97.2%. The experimental results agreed with the theoretical analysis are presented in this paper.

【 授权许可】

Unknown