A novel voltage output integrated circuit temperature sensor |
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| Authors: | Wu Xiao-bo Zhao Meng-lian Fang Zhi-gang Yan Xiao-lang |
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| Institution: | (1) Institute of Very Large Scale Integrated Circuit Design, Zhejiang University, 310027 Hangzhou, China;(2) Department of Information and Electronics, Zhejiang University, 310027 Hangzhou, China |
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| Abstract: | 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.
Project (No. 991106204) supported by Science and Technology Committee of Zhejiang Province, China |
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| Keywords: | Temperature sensing IC (integrated circuit) sensor Thermal matching |
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