Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/47598
Title: A low power CMOS temperature-to-frequency converter for RFID applications
Authors: Bistue, Guillermo
Solar, Hector
Fernandez, Erik
Lujan-Martinez, Clara
Del Pino, Javier 
Alvarado, Unai
UNESCO Clasification: 3307 Tecnología electrónica
Keywords: RF circuits
CMOS
temperature sensor
RFID
low power circuits
Issue Date: 2014
Journal: Proceedings of the 2014 29th Conference on Design of Circuits and Integrated Systems, DCIS 2014
Conference: 2014 29th Conference on Design of Circuits and Integrated Systems, DCIS 2014 
Abstract: This paper presents the design of a low power temperature sensor based on temperature-to-frequency conversion for RFID applications. The variation of temperature is detected by a PTC resistor that determines the reference current of a bootstrapped cascode source. This current is used to bias an active inductor. The self-resonance frequency varies accordingly to the shift of the current, thus providing the temperature to frequency conversion. The circuit has been implemented using a standard 65 nm CMOS technology. A frequency of oscillation of 31.3 MHz at 20°C has been obtained, with an estimated sensitivity of 50.5 kHz/°C, a resolution of 0.12°C and a power consumption of 21.8 uW within the 0-80°C temperature range.
URI: http://hdl.handle.net/10553/47598
ISBN: 9781479957439
DOI: 10.1109/DCIS.2014.7035580
Source: Proceedings of the 2014 29th Conference on Design of Circuits and Integrated Systems, DCIS 2014 (7035580)
Appears in Collections:Actas de congresos
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