Title :
An ultralow-energy ADC for Smart Dust
Author :
Scott, Michael D. ; Boser, Bernhard E. ; Pister, Kristofer S J
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of California, Berkeley, CA, USA
fDate :
7/1/2003 12:00:00 AM
Abstract :
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.
Keywords :
analogue-digital conversion; distributed sensors; intelligent sensors; low-power electronics; microsensors; 1 V; 70 pW; Smart Dust; distributed sensor networks; duty cycles; energy consumption; sensor networks; standby power consumption; successive approximation analog-todigital converter; ultralow-energy ADC; Analog-digital conversion; CMOS image sensors; Costs; Downlink; Energy consumption; Energy resolution; Intelligent sensors; Sampling methods; Sensor phenomena and characterization; Sensor systems;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2003.813296
