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Low power, high dynamic range, sample&hold circuit and analogue multiplexer for multi-channel recording of neuronal signals

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4 Author(s)
Przemysław Rydygier ; Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Kraków, Poland ; Władysław Dąbrowski ; Tomasz Fiutowski ; Piotr Wiącek

In the paper we present the design and test results of an integrated circuit combining the sample&hold and the analogue multiplexer, which is foreseen to be implemented in a multi-channel Application Specific Integrated Circuit (ASIC) for recording signal from alive neuronal tissue. The design is optimised with respect to critical requirements for such circuits, i.e. short sampling time, low power dissipation, good linearity and high dynamic range. Presented design comprises sample&hold circuits with class AB operational amplifier, novel shift register, which allows minimising cross-coupling of the clock signal and control logic. The circuit has been designed in a 0.35 μm CMOS process and has been successfully implemented in a prototype multi-channel ASIC.

Published in:

Mixed Design of Integrated Circuits and Systems (MIXDES), 2010 Proceedings of the 17th International Conference

Date of Conference:

24-26 June 2010