A Photovoltaic-Driven and Energy-Autonomous CMOS Implantable Sensor

被引:66
作者
Ayazian, Sahar [1 ]
Akhavan, Vahid A. [2 ]
Soenen, Eric [3 ]
Hassibi, Arjang [1 ]
机构
[1] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA
[2] Univ Texas Austin, Dept Chem Engn, Austin, TX 78712 USA
[3] Taiwan Semicond Mfg Co, Austin, TX 78759 USA
关键词
CMOS; energy harvesting; implantable device; neuromorphic; photovoltaic cell; subthreshold; NEURAL RECORDING-SYSTEM; MULTICHANNEL; OPTIMIZATION;
D O I
10.1109/TBCAS.2011.2179030
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
An energy-autonomous, photovoltaic (PV)-driven and MRI-compatible CMOS implantable sensor is presented. On-chip P+/N-well diode arrays are used as CMOS-compatible PV cells to harvest mu W's of power from the light that penetrates into the tissue. In this 2.5 mm x 2.5 mm sub-mu W integrated system, the in-vivo physiological signals are first measured by using a subthreshold ring oscillator-based sensor, the acquired data is then modulated into a frequency-shift keying (FSK) signal, and finally transmitted neuromorphically to the skin surface by using a pair of polarized electrodes.
引用
收藏
页码:336 / 343
页数:8
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