Abstract
Abstract This paper proposes Relaxation Oscillator with Random Number Generator to minimize electromagnetic interference (EMI) noise. DC-DC Converter with Relaxation Oscillator is presented how much spurious noise effects to RF Receiver system. The main frequency of the proposed Relaxation oscillator is 7.9 MHz to operate it and add temperature compensation block to be applied to the frequency compensation in response to temperature changes. The DC-DC Converter Spurious noise is reduced up to 20 dB through changing frequency randomly. It is fabricated in 0.18 μm CMOS technology. The active area occupies an area of 220 μm×280 μm. The supply voltage is 1.8 V and current consumption is 500 μA.Key words: Relaxation Oscillator, EMI, Random Number Generator, Temperature Compensation ts (College of Information & Communication Engineering, SungKyunKwan University) *SK i¢(SK Telecom)Manuscript received July 6, 2015 ; Revised September 4, 2015 ; Accepted September 11, 2015. (ID No. 20150706-07S)Corresponding Author: Kang-Yoon Lee (e-mail: klee@skku.edu)
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