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19th International Conference on VLSI Design held jointly with 5th International Conference on Embedded Systems Design (VLSID'06)
A Wideband Frequency-Shift Keying Demodulator for Wireless Neural Stimulation Microsystems
Hyderabad, India
January 03-January 07
ISBN: 0-7695-2502-4
Mian Dong, Tsinghua University
Chun Zhang, Tsinghua University
Songping Mai, Tsinghua University
Zhihua Wang, Tsinghua University
Dongmei Li, Tsinghua University
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 ?m, 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.
Citation:
Mian Dong, Chun Zhang, Songping Mai, Zhihua Wang, Dongmei Li, "A Wideband Frequency-Shift Keying Demodulator for Wireless Neural Stimulation Microsystems," vlsid, pp.521-524, 19th International Conference on VLSI Design held jointly with 5th International Conference on Embedded Systems Design (VLSID'06), 2006
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