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A new integrated low-power BPSK demodulator for wireless implantable neural recording system

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3 Author(s)
Li, C.P. ; Sch. of Electron. & Inf. Technol., South China Univ. of Technol., Guangzhou, China ; Wu, Z.H. ; Li, B.

Low power and small volume are always the most important issues in the internal module of a wireless implantable neural recording system. In this paper, a BPSK demodulator base on digital-analog hybrid COSTAS Loop is presented. A digital multiplier replacing the analog multiplier is presented specially to achieve lower power consumption in the proposed circuit. The proposed BPSK demodulator features with a data transmission rate of 1 Mbps and consumes 485.4uW under a supply voltage of 3.3V, which has been implemented with a Chartered 0.35um CMOS process. The area of the chip is only 0.17mm2. Test results show that it can work correctly.

Published in:

Electron Devices and Solid-State Circuits (EDSSC), 2010 IEEE International Conference of

Date of Conference:

15-17 Dec. 2010