engleski

High efficiency multiplexing scheme for multi-channel A/D conversion

Multiplexing technique is frequently used in multi-channel analog to digital (A/D) conversion, thus reducing the system complexity and cost. However, if the sampling frequencies of the input channels are not equal, obtaining high A/D converter utilization is rather complicated. A new rule-based synchronous multiplexing scheme for multi-channel A/D conversion with different channel sampling frequencies is proposed. It is optimal in the sense that required A/D conversion frequency is the minimum. The channel sequencing is based on the earliest deadline principle, similar to the one used in real-time dynamic scheduling algorithms.

Synchronous multiplexing; multi-channel A/D conversion; different channel rates

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