An Ultra Compact Integrated Front End for Wireless Neural Recording Microsystems
| Autor: | Kensall D. Wise, G E Perlin |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Engineering
Interconnection Precision engineering business.industry Mechanical Engineering Electrical engineering Multielectrode array Front and back ends Surface micromachining chemistry.chemical_compound Parylene chemistry Microsystem Electrical and Electronic Engineering business Microfabrication |
| Zdroj: | Journal of Microelectromechanical Systems. 19:1409-1421 |
| ISSN: | 1941-0158 1057-7157 |
| DOI: | 10.1109/jmems.2010.2082496 |
| Popis: | The design and performance of an integrated front end for high-channel-count neural recording microsystems is presented. This front end consists of a 3-D micromachined microelectrode array, realized using a new architecture that allows simple and rapid microassembly. A 64-site 3-D multiprobe, realized using the new architecture, interfaces with tissue volumes of less than 0.01 mm3 and has a footprint of 1 mm2. For amplification, filtering, and buffering of the recorded neural signals, a custom signal-conditioning circuit provides high gain (60 dB), low noise (4.8 μVrms), and low power (50 μW) in an area of 0.098 mm2. In addition, this circuitry implements bandwidth tuning, offset compensation, and wireless gain programmability. This new approach to system integration uses a microfabricated parylene overlay cable to electrically interconnect the 3-D array and signal-conditioning circuitry. In vivo results obtained using this integrated microsystem front end in its most compact form are presented. |
| Databáze: | OpenAIRE |
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