Title :
A Low Power Carbon Nanotube Chemical Sensor System
Author :
Cho, Taeg Sang ; Lee, Kyeong-Jae ; Kong, Jing ; Chandrakasan, Anantha P.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge
Abstract :
This paper presents an energy efficient chemical sensor system that uses carbon nanotubes (CNT) as the sensor. The room-temperature operation of CNT sensors eliminates the need for micro hot-plate arrays, which enables the low energy operation of the system. The sensor interface chip is designed in a 0.18 mum CMOS process and consumes, at maximum, 32 muW at 1.83 kS/s conversion rate. The designed interface achieves 1.34% measurement accuracy over 10 kOmega -9 MOmega dynamic range. The functionality of the full system, including CNT sensors, has been successfully demonstrated.
Keywords :
carbon nanotubes; chemical sensors; electric sensing devices; low-power electronics; CMOS process; low energy operation; low power carbon nanotube chemical sensor system; sensor interface chip; Carbon nanotubes; Chemical and biological sensors; Chemical sensors; Circuits; Dynamic range; Electrical resistance measurement; Immune system; Monitoring; Sensor arrays; Sensor systems;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-1623-3
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405708
