Title :
An ultra low energy 8-bit charge redistribution ADC for wireless sensors
Author :
Cenoz Villanueva, Inigo ; Lopez-Martin, Antonio
Author_Institution :
Dept. of Electr. & Electron. Eng., Public Univ. of Navarra, Pamplona, Spain
Abstract :
A low-energy 8-bit charge-redistribution SAR ADC for wireless sensor nodes is proposed. The ADC employs a new capacitor switching procedure that allows a reduction of the average switching energy as compared to previous proposals. Simulation and measurement results of a test chip prototype operating at 100 kS/s are provided, showing a SFDR of 55.63 dB for a power consumption of 2.17 μW. The active area of the ADC is only 0.275 mm2.
Keywords :
analogue-digital conversion; capacitor switching; switched capacitor networks; wireless sensor networks; SAR; average switching energy reduction; capacitor switching procedure; charge redistribution ADC; power 2.17 muW; test chip prototype; wireless sensor node; Arrays; Capacitors; Microsensors; Switches; Transistors; Wireless sensor networks; Analog-to-digital converter; charge redistribution; energy efficient; low power; successive approximation register;
Conference_Titel :
Sensing Technology (ICST), 2013 Seventh International Conference on
Conference_Location :
Wellington
Print_ISBN :
978-1-4673-5220-8
DOI :
10.1109/ICSensT.2013.6727642
