Journal
IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume 38, Issue 7, Pages 1123-1129Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2003.813296
Keywords
analog-to-digital converter (ADC); charge redistribution; CMOS; energy; low power; sensor networks; Smart Dust; successive approximation
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A low-energy successive approximation analog to-digital converter (ADC) targeted for use in distributed sensor networks is presented. The individual nodes combine sensing, computation, communications, and power into a tiny volume. Energy is extremely limited, forcing,the nodes to operate with very low duty cycles. This paper describes the design and implementation of an ADC to meet the unique requirements of sensor networks. The ADC reported here consumes 31 pJ/8-bit sample at 1-V supply and 100 kS/s, with a standby power consumption of 70 pW. This energy consumption is one of the lowest ever reported.
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