Abstract
In this paper, a novel simultaneous multichannel data acquisition system is proposed. Analog signals are applied to an analog multiplexer with a single analog to digital converter. The target technology of implementing the proposed design is the Field Programmable Gate Array(FPGA). The Analog-to-Digital Converter interface and the Flash memory driver are implemented in the FPGA using hardware description language. The synthesized prototype used only 11% of the total logic elements (of Altera CycloneII, EP2C35F672C-6N FPGA) and 15% of its total memory bits. The worst-case prorogation delay observed for the system is 12.04 ns, which is less than the 50 MHz clock period of20ns. The Cyclone-II FPGA consumes power as low as 12mW. The SNR of the recorded signal is 70 dB. The proposed system can be used in various applications that require simultaneous multi-channel data acquisition system such as biomedical engineering.
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