A wideband frequency-shift keying demodulator for wireless neural stimulation microsystems  

作　　者：DONG Mian ZHANG Chun MAI Song-ping WANG Zhi-hua LI Dong-mei 

机构地区：[1]Department of Electronic Engineering, Tsinghua University, Beijing 100084, China [2]Institute of Microelectronics, Tsinghua University, Beijing 100084, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2006年第6期1056-1060,共5页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Basic Research Program (973) of China (No. G2000036508) and the National Natural Science Foun-dation of China (No. 60475018)

摘　　要：This paper presents a wideband frequency-shift keying （FSK） demodulator suitable for a digital data transmission chain of wireless neural stimulation microsystems such as cochlear implants and retinal prostheses. The demodulator circuit derives a constant frequency clock directly from an FSK carrier, and uses this clock to sample the data bits. The circuit occupies 0.03 mm^2 using a 0.6 μm, 2M/2P, standard CMOS process, and consumes 0.25 mW at 5 V. This circuit was experimentally tested at transmission speed of up to 2.5 Mbps while receiving a 5-10 MHz FSK carrier signal in a cochlear implant system.

关 键 词：Biomedical implants CMOS DEMODULATOR Frequency-shift keying （FSK） Cochlear implant 

分 类 号：TN76[电子电信—电路与系统]