IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A low-power, generic biostimulator with arbitrary pulse shape, based on a central control core
Milad FaizollahMousa KarimiAmir M. Sodagar
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JOURNALS FREE ACCESS

2013 Volume 10 Issue 3 Pages 20120868

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Abstract

This paper reports on the design of a low-power biostimulator, capable of generating stimulus pulses with arbitrary wave shapes and programmable amplitude and timing. Designed based on a modular architecture with programmable stimulation details, this system can be used in a wide variety of applications. The system complies with basic requirements for biomedical stimulation systems such as small physical size, serial data communication with external setup, and low-power consumption. It also performs basic functions such as generating bi-phasic pulses, single/train pulses, and residual charge cancellation. Clock gating, operation with external timing, and shared resources are used among the main techniques to significantly reduce the power consumption of the system. To wirelessly interface with the external setup, a BPSK demodulator and clock recovery circuit is used which exhibit 100% data-rate-to-carrier-frequency ratio and consumes as low as 120µW at 2.5Mbps. The system was designed and simulated in a 0.18-µm standard CMOS technology, prototyped for functional verifications, and successfully tested.

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© 2013 by The Institute of Electronics, Information and Communication Engineers
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