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Research and Design of the Analog Part of Fully Integrated Temperature Sensor

Author: LiuYanZuo
Tutor: WuYuGuang
School: Xi'an University of Electronic Science and Technology
Course: Microelectronics and Solid State Electronics
Keywords: Low power consumption Temperature sensor Temperature detecting circuit ΣΔ modulator
CLC: TP212.11
Type: Master's thesis
Year: 2009
Downloads: 225
Quote: 1
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Abstract


Fully integrated temperature sensor has obvious advantages compared to the traditional thermistor sensor , high accuracy , small size , low power consumption , easy reading , and may also use a variety of temperature sensors to adapt to the environment of different technologies , but also for the control circuit or computer interface , suitable for application in integrated circuit system , the future direction of the development of the temperature sensor . This thesis is completed the design of the analog part of a low -power fully integrated temperature sensor , temperature detection circuit and Σ? Modulator . The temperature detecting circuit according to a positive temperature coefficient of ΔVBE of bipolar transistors operating at different current densities , resulting in a voltage proportional to the temperature value, that value as Σ ? Modulator of the input signal , and is converted into a digital code stream output. The design of the power supply voltage of 5V, the power consumption is about 0.3mW, temperature detection range from -75 ℃ to 125 ℃ . The design is based on TSMC 0.5μm 2P2M CMOS technology with Hspice software , each sub- module in the circuit and the whole circuit simulation , simulation results show that the circuit is designed to meet the design requirements .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Physical sensors > Temperature sensor
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