Title :
A high performance class AB current conveyor
Author :
Kurashina, Takashi ; Ogawa, Satomi ; Watanabe, Kenzo
Author_Institution :
Res. Inst. of Electron., Shizuoka Univ., Hamamatsu, Japan
Abstract :
A class AB CMOS current conveyor is developed for wideband current-mode signal processing, It consists of a differential stage for the voltage input, a single-ended push-pull stage for the current input, and current mirrors for the current output. The differential and push-pull stages form a unity-gain buffer, to realize exact voltage-following action and low impedance at the current input node. Simulations based on a 0.6 μm CMOS process show that the impedance at the current input node is 3.5 Ω and the current and voltage transfer characteristics extend beyond 100 MHz. This performance and the low power consumption are quite satisfactory for most applications
Keywords :
CMOS analogue integrated circuits; SPICE; analogue processing circuits; circuit simulation; current conveyors; current mirrors; current-mode circuits; low-power electronics; 0.6 mum; CCII; HSPICE simulation; class AB CMOS current conveyor; current input; current mirrors; current output; current transfer characteristics; differential stage; exact voltage-following action; low impedance; low power consumption; single-ended push-pull stage; unity-gain buffer; voltage input; voltage transfer characteristics; wideband current-mode signal processing; Bandwidth; CMOS process; Circuits; Feedback; Impedance; Mirrors; Operational amplifiers; Signal processing; Voltage; Wideband;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.813954
