Generic controller dedicated to telemetry-controlled microsystems.
ABSTRACT This paper introduces a generic controller designed for telemetry-controlled microsystems. This controller receives a data packet through a serial link carrying a command word and the associated data, and is capable of generating a variety of control/timing signals according to the definition of the received command. The flexible microprogrammed architecture of the controller allows for defining the commands functions in an on-chip mask-programmable read-only memory.
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ABSTRACT: Abstract-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 mm<sup>3</sup> and has a footprint of 1 mm<sup>2</sup>. For amplification, filtering, and buffering of the recorded neural signals, a custom signal-conditioning circuit provides high gain (60 dB), low noise (4.8 μV<sub>rms</sub>), and low power (50 μW) in an area of 0.098 mm<sup>2</sup>. 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.Journal of Microelectromechanical Systems 01/2011; DOI:10.1109/JMEMS.2010.2082496 · 1.92 Impact Factor