標題: A 65nm CMOS Low-Power MedRadio-band Integer-N Cascaded Phase-Locked Loop for Implantable Medical Systems
作者: Wang, Yi-Xiao
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 band
公開日期: 1-Jan-2014
摘要: This paper presents a low-power MedRadio-band integer-N phase-locked Loop (PLL) system which is composed of two charge-pump PLLs cascade connected. The PLL provides the operation clock and local carrier signals for an implantable medical electronic system. In addition, to avoid the off-chip crystal oscillator, the 13.56 MHz Industrial, Scientific and Medical (ISM) band signal from the wireless power transmission system is adopted as the input reference signal for the PLL. Ring-based voltage controlled oscillators (VCOs) with current control units are adopted to reduce chip area and power dissipation. The proposed cascaded PLL system is designed and implemented in TSMC 65-nm CMOS technology. The measured jitter for 216.96 MHz signal is 12.23 ps and the phase noise is -65.9 dBc/Hz at 100 kHz frequency offset under 402.926 MHz carrier frequency. The measured power dissipations are 66 mu W in the first PLL and 195 mu W in the whole system under 1-V supply voltage. The chip area is 0.1088 mm(2) and no off-chip component is required which is suitable for the integration of the implantable medical electronic system.
URI: http://hdl.handle.net/11536/125042
ISBN: 978-1-4244-7929-0
ISSN: 1557-170X
期刊: 2014 36TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)
起始頁: 642
結束頁: 645
Appears in Collections:Conferences Paper