Title :
Novel low-power 12-bit SAR ADC for RFID tags
Author :
De Venuto, Daniela ; Stikvoort, Eduard ; Castro, David Tio ; Ponomarev, Youri
Author_Institution :
DEE, Politec. di Bari, Bari, Italy
Abstract :
A novel design and measuring results of an ultra-low power 12bit Successive-Approximation ADC for autonomous multi-sensor systems are presented. The comparator and the DAC are optimised for the lowest power consumption. The proposed design has a power consumption of 0.52¿W at a bitclock of 50-kHz and of 0.85¿W at 100-kHz with a 1.2-V supply. The Figure-of-Merit reached with such implementation is of 66 fJ/conversion-step. The ADC was realised in the NXP CMOS 0.14¿m technology with an area of 0.35 mm2. Only four metal layers were used in order to allow 3D integration of the sensors.
Keywords :
analogue-digital conversion; comparators (circuits); digital-analogue conversion; low-power electronics; radiofrequency identification; CMOS technology; autonomous multisensor systems; comparators; figure-of-merit; frequency 100 kHz; frequency 50 kHz; power 0.52 muW; power 0.85 muW; radiofrequency identification tags; size 0.14 mum; successive approximation analog-digital converters; voltage 1.2 V; word length 12 bit; CMOS technology; Capacitors; Costs; Energy consumption; Logic; RFID tags; Radiofrequency identification; Supply chains; Switches; Temperature sensors;
Conference_Titel :
Quality Electronic Design (ISQED), 2010 11th International Symposium on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-6454-8
DOI :
10.1109/ISQED.2010.5450523
