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An ultra-compact green bio-regulator dedicated for brain cortical implant using a dynamic PSR enhancement technique

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5 Author(s)
Chiang-Liang Kok ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; Liter Siek ; Fei Gao ; Yuanjin Zheng
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This article presents an ultra-compact green Bio-regulator dedicated for brain cortical implant using a dynamic PSR enhancement technique. This novel technique enabled the regulator to achieve a very high power supply rejection (PSR) of -58dB and -78dB at 1 MHz and 10MHz respectively. The Bioregulator achieves a very low quiescent current of 2μA coupled with an ultra-low power consumption of 1.8μW. This Bioregulator, simulated with Global Foundries 0.18μm CMOS process, yields a stable output voltage of 0.5V with a supply voltage ranging from 0.9-1.2V. Its distinct features, ultra-low power consumption and high PSRR at 1MHz and 10MHz, make it ideally suitable for biomedical brain cortical implant.

Published in:

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Date of Conference:

Aug. 28 2012-Sept. 1 2012