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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xilin Liu Hongjie Zhu Milin Zhang Richardson, A.G. Lucas, T.H. Van der Spiegel, J. |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Neurosurg., Univ. of Pennsylvania, Philadelphia, PA, USA (Richardson, A.G.; Lucas, T.H.) |
| Abstract | This paper presents a 12-channel, low-power, high efficiency neural signal acquisition front-end for local field potential and action potential signals recording. The proposed neural front-end integrates low noise instrumentation amplifiers, low-power filter stages with configurable gain and cut-off frequencies, a successive approximation register (SAR) ADC, and a realtime compressed sensing processing unit. A capacitor coupled instrumentation amplifier integrated input impedance boosting has been designed, dissipating 1μA quiescent current. An input referred noise of 1.63μV was measured in the frequency band of 1Hz to 7kHz. The noise efficiency factor (NEF) of the amplifier is 0.76. The SAR ADC achieves an ENOB of 10.6-bit at a sampling rate of 1MS/s. A compressed sensing processing unit with configurable compression ratio, up to 8x, was integrated in the design. The design has been fabricated in 180nm CMOS, occupying 4.5mm×1.5mm silicon area. A portable neural recorder has been built with the custom IC and a commercial low-power wireless module. A 4.6g lithium battery supports the device for a continuous compressed sensing recording up to 70 hours. |
| Starting Page | 2996 |
| Ending Page | 2999 |
| File Size | 1157202 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479983919 |
| DOI | 10.1109/ISCAS.2015.7169317 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-05-24 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Noise Compressed sensing Wireless sensor networks Wireless communication Capacitors Instruments Bandwidth SAR ADC Neural amplifier high noise efficiency compressed sensing |
| Content Type | Text |
| Resource Type | Article |
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