Title :
A wideband frequency-shift keying demodulator for wireless neural stimulation microsystems
Author :
Dong, Mian ; Zhang, Chun ; Mai, Songping ; Wang, ZhiHua ; Li, DongMei
Author_Institution :
Tsinghua Univ., Beijing, China
Abstract :
This paper presents a wideband frequency-shift keying (FSK) demodulator which is 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 a FSK carrier, and uses this clock to sample the data bits. The circuit occupies 0.03 mm2 in a 0.6 μm, 2M/2P, standard CMOS process, and consumes 0.25mW at 5V. This demodulator circuit is experimentally tested at the transmission speed up to 2.5Mbps while receiving a 5/10 MHz FSK carrier signal in a cochlear implant system.
Keywords :
CMOS integrated circuits; biomedical communication; data communication; demodulators; ear; eye; frequency shift keying; neuromuscular stimulation; prosthetics; 0.25 mW; 0.6 micron; 10 MHz; 2.5 Mbit/s; 5 MHz; 5 V; cochlear implant system; digital data transmission; frequency clock; retinal prostheses; wideband frequency-shift keying demodulator; wireless neural stimulation microsystems; CMOS process; Circuit testing; Clocks; Cochlear implants; Data communication; Demodulation; Frequency shift keying; Neural prosthesis; Retina; Wideband;
Conference_Titel :
VLSI Design, 2006. Held jointly with 5th International Conference on Embedded Systems and Design., 19th International Conference on
Print_ISBN :
0-7695-2502-4
DOI :
10.1109/VLSID.2006.29
