Title：A resistance temperature sensor chip
Country：China
Patent No.：201511025460.0
Legal Status：Authorized
Inventor：Xian Tang, Chun Zhang, Zhihua Wang
Assignee：Graduate School at Shenzhen, Tsinghua University
Address：Tsinghua Campus, Xili University Town, Nanshan District, Shenzhen City 518055, Guangdong Province
Filing Date：2015-12-30
Issue Date：2018-04-20
Abstract：
The invention discloses a resistor type temperature sensor chip comprising a temperature sensing circuit, a time converting circuit, a reference clock generating circuit, and a digital conversion circuit. A temperature sensing resistor is arranged in the temperature sensing circuit and current and voltage information of the temperature sensing resistor is outputted. The time converting circuit is used for receiving the current and voltage information and carrying out conversion based on the current and voltage information to obtain time information changing linearly with temperatures. The reference clock generating circuit is used for generating a reference clock signal changing linearly with temperatures. And the digital conversion circuit is used for receiving the reference clock signal and the time information, carrying out digital quantification on the time information relative to the reference clock signal, and outputting a digital quantification value. According to the temperature sensor chip, the chip is integrated with an on-chip clock source without relying on an external clock source; and the overall circuit structure is simple.
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