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CLC number: TN431.1

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Received: 2001-11-12

Revision Accepted: 2002-05-06

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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.5 P.553~558


A novel voltage output integrated circuit temperature sensor

Author(s):  WU Xiao-bo, ZHAO Meng-lian, YAN Xiao-lang, YAN Xiao-lang

Affiliation(s):  Institute of Very Large Scale Integrated Circuit Design, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   wuxb@vlsi.zju.edu.cn

Key Words:  Temperature sensing, IC (integrated circuit) sensor, Thermal matching

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WU Xiao-bo, ZHAO Meng-lian, YAN Xiao-lang, YAN Xiao-lang. A novel voltage output integrated circuit temperature sensor[J]. Journal of Zhejiang University Science A, 2002, 3(5): 553~558.

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The novel integrated circuit (IC) temperature sensor presented in this paper works similarly as a two-terminal Zener, has breakdown voltage directly proportional to Kelvin temperature at 10 mV/°C, with typical error of less than ±1.0°C over a temperature range from -50°C to +125°C. In addition to all the features that conventional IC temperature sensors have, the new device also has very low static power dissipation (0.5 mW), low output impedance (less than 1Ω), excellent stability, high reproducibility, and high precision. The sensor's circuit design and layout are discussed in detail. Applications of the sensor include almost any type of temperature sensing over the range of -50°C - +125°C. The low impedance and linear output of the device make interfacing the readout or control circuitry especially easy. Due to the excellent performance and low cost of this sensor, more applications of the sensor over wide temperature range are expected.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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