Title :
A 9.2µA gen 2 compatible UHF RFID sensing tag with −12dBm Sensitivity and 1.25µVrms input-referred noise floor
Author :
Yeager, Doug ; Fan Zhang ; Zarrasvand, A. ; Otis, Brian P.
Author_Institution :
Univ. of Washington, Seattle, WA, USA
Abstract :
This work presents a 9.2 μA fully-passive sensor tag in 0.13 μm CMOS for biomedical research and human health monitoring. The sensor tag includes a 260 nA temperature-compensated 3 MHz reference oscillator. Subthreshold tag logic consumes 6μA from the 0.7 V supply. A 1.2 μA fully-differential chopper-stabilized amplifier with 1.25 μVrms input-referred noise is integrated for sensor interfacing. The system exhibits a range of 3 m and was deployed to perform wireless in-flight recording on a moth.
Keywords :
CMOS integrated circuits; UHF oscillators; biomedical measurement; patient monitoring; radiofrequency identification; CMOS; UHF RFID sensing tag; biomedical research; current 1.2 μA; current 260 nA; current 6 μA; current 9.2 μA; distance 3 m; frequency 3 MHz; fully-differential chopper-stabilized amplifier; human health monitoring; input-referred noise floor; passive sensor tag; reference oscillator; size 0.13 μm; subthreshold tag logic; voltage 0.7 V; voltage 1.25 μV; wireless in-flight recording; Biosensors; Choppers; Clocks; Insects; Oscillators; Protocols; RFID tags; Radio frequency; Radiofrequency identification; Temperature;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5434055
