Low-Power Digitally Controlled Oscillator (DCO) for SoC Applications

In this paper, a novel portable and All-Digital Spread Spectrum Clock Generator (ADSSCG) suitable for System-on-Chip (SoC) applications with low-power consumption is presented. The proposed ADSSCG can provide flexible spreading ratios by the proposed Rescheduling Division Triangular Modulation (RDTM). Thus it can provide different EMI attenuation performance for various system applications. Furthermore, the proposed ADSSCG employs a low-power Digitally Controlled Oscillator (DOC) to save overall power consumption significantly. Measurement results show that power consumption of the proposed ADSSCG is 1.2mW and it provides 9.5 dB EMI reductions with 1% spreading ratio.
Provided by: International Journal of Electronics Communication and Computer Engineering Topic: Hardware Date Added: Mar 2013 Format: PDF

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