標題: | A CMOS MedRadio-Band Low-Power Integer-N Cascaded Phase-Locked Loop for Implantable Medical SOCs |
作者: | Liao, Yu-Yu Chen, Wei-Ming Wu, Chung-Yu 電機學院 College of Electrical and Computer Engineering |
關鍵字: | phase-locked loop;implantable;low power;MedRadio |
公開日期: | 2013 |
摘要: | In this paper, a low power integer-N cascaded Phase-locked loop (PLL) is proposed to provide the carrier signal and clock signals for a SOC with MedRadio-band transceiver, ADC, DSP, and 13.56-MHz wireless power supply. In the proposed cascaded PLL, the first PLL provides the sampling clocks while the second PLL provides the carrier clock. Furthermore, the 13.56-MHz signal from the receiving coil of the wireless power transmission system is utilized as the input reference signal. Ring-based voltage controlled oscillator (VCO) is designed to minimize both power consumption and chip area. The proposed cascaded PLL is designed and implemented in 0.18-mu m CMOS technology. The measured phase noise is -79 dBc/Hz at 100 kHz offset under 402.9 MHz. The measured power consumptions are 0.28 mW in the first PLL and 0.46mW in the second PLL with a 1.8V supply voltage. The proposed cascaded PLL has low power dissipation, small chip area, and no off-chip components or crystal oscillator. It is suitable for the integration with implantable medical SOCs. |
URI: | http://hdl.handle.net/11536/24167 |
ISBN: | 978-1-4799-1471-5 |
ISSN: | 2163-4025 |
期刊: | 2013 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS) |
起始頁: | 286 |
結束頁: | 289 |
顯示於類別: | 會議論文 |