Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P2
Session:
Number:P2-4
Relaxation Oscillator-Based Resistor Controlled Pulse Waveform Generator using Current Conveyors
Pil-Soo Hyeon, Sung-Ho Yun, Hyeong-Woo Cha,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A class AB current conveyor with low output impe-dance has been designed and simple triangle and square waveform geneators whose frequency can be controlled by exteral resistor(s) also have been proposed. The current conveyor consists of class AB push-pull stage, complementary source-follower, and current mirror. The oscillator based waveform generator consists of two positive current conveyors (CCII+), two comparators, one RS-latch, two grounded capacitors and one(or two) resistors. The circuits are designed in 0.35um CMOS technology. Oscillating frequencies from 420KHz to 1200KHz were attained in the SPICE simulation. The waveform generator shows linearity error less than 2.5% and dissipates 3mW.