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Wireless sensing by means of passive multistandard RFID tags

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6 Author(s)
Brenk, D. ; Inst. for Electron. Eng., Univ. of Erlangen-Nuremberg, Erlangen, Germany ; Essel, J. ; Heidrich, J. ; Weigel, R.
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This paper presents a generic sensor interface built in a 0.13 ¿m CMOS process capable of being applied in passive HF & UHF RFID Tags without any additional power supply. The sensor interface contains an ultra low-power successive approximation ADC that uses the capacitive charge redistribution technique for its integrated DAC. An on-chip temperature sensor and up to three additional sensor signals can be applied to the ADC. A conversion rate of 100 kSps is reached while consuming less than 1.5 ¿A at 0.9 Volt supply voltage.

Published in:

Sensors, 2009 IEEE

Date of Conference:

25-28 Oct. 2009