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Title: High accuracy time-mode duty-cycle-modulation-based temperature sensor for energy efficient system applications
Authors: Zhu, Di
Wang, Jiacheng
Siek, Liter
Kok, Chiang Liang
Qiu, Lei
Zheng, Yuanjin
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Integrated circuits
Issue Date: 2014
Source: Zhu, D., Wang, J., Siek, L., Kok, C. L., Qiu, L., & Zheng, Y. (2014). High accuracy time-mode duty-cycle-modulation-based temperature sensor for energy efficient system applications. 2014 International Symposium on Integrated Circuits (ISIC 2014).
Abstract: This paper presents a new time-mode duty-cycle-modulation-based high accuracy temperature sensor. Different from the well-known ΣΔADC based read-out structure, this temperature sensor's architecture utilizes a temperature-dependent oscillator to convert the temperature information into temperature related time-mode parameter, which means that the large power consumption of ΣΔADCs can be mitigated. The useful information of the oscillator's output is the duty-cycle, not the absolute frequency. In this way, a proportional to absolute temperature (PTAT) data stream is generated by the special oscillator. With a linear formula, this duty cycle stream can be converted into temperature value. The design is simulated in 0.18μm standard digital CMOS process. The simulation result shows that the worst temperature inaccuracy is kept within 0.5°C with a one-point calibration from -55°C to 125°C. The accuracy FOM is 0.185nJ%2.
DOI: 10.1109/ISICIR.2014.7029502
Rights: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers
ERI@N Journal Articles

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