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A 32-22W 183-kSs Carbon Nanotube Chemical Sensor System Taeg Sang Cho Student Me
一种基于碳纳米管的低功耗化学传感器系统，采用自适应DAC和ADC控制实现高精度测量。
0.18μm CMOS, 32μW/87μW at 1.83kS/s, 1.34% accuracy (10Ω–9MΩ)
碳纳米管化学传感器低功耗自适应控制离散优化
▸室温操作的碳纳米管传感器消除微热板需求
▸冗余传感器阵列解决工艺变异可靠性问题
▸离散优化方法动态调整DAC和ADC范围以降低能耗
Abstract
This paper presents an energy-efficient chemical
sensor system that uses carbon nanotubes (CNT) as the sensing
medium. The room-temperature operation of CNT sensors elim-
inates the need for micro hot-plate arrays, which enables the low
energy operation of the system. An array of redundant CNT sen-
sors overcomes the reliability issues incurred by the CNT process
variation. The sensor interface chip is designed to accomodate a
16-bit dynamic range by adaptively controlling an 8-bit DAC and
a 10-b