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http://dx.doi.org/10.9723/jksiis.2013.18.5.039

A Design of 18 MHz Relaxation Oscillator with ±1 % Accuracy Based on Temperature Sensor  

Kim, Sang Yun (성균관대학교 정보통신대학)
Lee, Ju Ri (성균관대학교 정보통신대학)
Lee, Dong Soo (성균관대학교 정보통신대학)
Park, Hyung Gu (성균관대학교 정보통신대학)
Kim, Hong Jin (성균관대학교 정보통신대학)
Lee, Kang-Yoon (성균관대학교 정보통신대학)
Publication Information
Journal of Korea Society of Industrial Information Systems / v.18, no.5, 2013 , pp. 39-44 More about this Journal
Abstract
In this paper, a Relaxation Oscillator with temperature compensation using BGR and ADC is presented. The current to determine the frequency of Relaxation Oscillator can be controlled. By adjusting the current according to the temperature using the code that is output from the ADC and BGR, was to compensate the output frequency of the temperature. It is fabricated in a 0.35 ${\mu}m$ CMOS process with an active area of $240{\mu}m{\times}210{\mu}m$. Current consumption is 600 ${\mu}A$ from a 5 V and the rate of change of the output frequency with temperature shows about ${\pm}1%$.
Keywords
Relaxation Oscillator; Temperature Compensation; Accuracy; CMOS;
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