Title :
Design of charge-pump phase locked loop in micro-inertial sensor
Author :
Weiping, Chen ; Qiang, Fu ; Yuan, Yuan ; Ran, Song ; Yaoguang, Li ; Xiaowei, Liu
Author_Institution :
MEMS Center, Harbin Inst. of Technol., Harbin, China
Abstract :
A charge-pump phase locked loop(CPPLL) is designed for high-precision and high-stability in micro-inertial system. In this CPPLL, D-flip-flops are used to eliminate dead phase-zone and current mirrors are designed to improve matching between charge and discharge of the charge-pump, besides, unit gain amplifiers are applied to suppress the charge sharing. The simulation result shows that the frequency stability achieves 0.186/10000, while the periodic jitter is 931.32ps.
Keywords :
charge pump circuits; flip-flops; microsensors; phase locked loops; CPPLL; D-flip-flops; charge-pump phase locked loop; design; micro-inertial sensor; micro-inertial system; Charge pumps; Delay; Flip-flops; Frequency control; Frequency conversion; Logic gates; Phase frequency detector; CPPLL; PFD; VCO; micro-gyroscope;
Conference_Titel :
Optoelectronics and Microelectronics Technology (AISOMT), 2011 Academic International Symposium on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-0794-0
DOI :
10.1109/AISMOT.2011.6159365
