A 0.52/1 V Fast Lock-in ADPLL for Supporting Dynamic Voltage and Frequency Scaling

In energy-efficient processing platforms, such as wearable sensors and implantable medical devices, dynamic voltage and frequency scaling allows optimizing the energy efficiency under various modes of operation. The clock generator used in these platforms should be capable of achieving a faster sett...

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Veröffentlicht in:IEEE transactions on very large scale integration (VLSI) systems 2016-01, Vol.24 (1), p.408-412
Hauptverfasser: Chung, Ching-Che, Su, Wei-Siang, Lo, Chi-Kuang
Format: Artikel
Sprache:eng
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Zusammenfassung:In energy-efficient processing platforms, such as wearable sensors and implantable medical devices, dynamic voltage and frequency scaling allows optimizing the energy efficiency under various modes of operation. The clock generator used in these platforms should be capable of achieving a faster settling time and has a wider operating voltage range. In this brief, a fast lock-in all-digital phase-locked loop (ADPLL) with two operation modes (0.52/1 V) is presented. The proposed ADPLL can quickly compute the desired digitally controlled oscillator control code with high accuracy. Therefore, the proposed ADPLL can achieve a fast setting time with frequency errors
ISSN:1063-8210
1557-9999
DOI:10.1109/TVLSI.2015.2407370