Journal ArticleDOI
Temperature sensors and voltage references implemented in CMOS technology
TLDR
It is shown that bipolar substrate transis- tors are very suited to be applied to generate the basic and PTAT voltages and dynamic element matching and auto-calibration can solve the problems related to mismatching of components and noise.Abstract:
This paper reviews the concepts, opportunities and limitations of temperature sensors and voltage references realized in CMOS technology. It is shown that bipolar substrate transis- tors are very suited to be applied to generate the basic and PTAT voltages. Furthermore, it is shown that dynamic element matching and auto-calibration can solve the problems related to mismatching of components and noise. The effects of mechan- ical stress are a major source of inaccuracy. In CMOS technology, the mechanical-stress effects are small, as compared to those in bipolar technology. It is concluded that, with low-cost CMOS tech- nolog, rather accurate voltage references and temperature sensors can be realized.read more
Citations
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Smart Temperature Sensor with
TL;DR: A mUlti-range ultra-lower power high accuracy CMOS smart temperature sensor based on substrate BJTs and a first-order incremental delta-sigma analog to-digital converter (A�-ADC) targeting on applications where accuracy and power have higher priority over the sensing range and speed requirement.
Journal ArticleDOI
A thermal protection circuit for fast battery charging LDOs
Zhiming Xiao,Zhi-nan Zhao,Yue Zhao,Weibo Hu,F. Luo,Junzhong Yang,Sen Yang,Jindong Xu,Lin Huang +8 more
Journal ArticleDOI
Temperature Sensors Integrated into a CMOS Image Sensor
TL;DR: In this article, a novel approach is presented for measuring relative temperature variations inside the pixel array of a CMOS image sensor itself, which can give important information when compensation for dark (current) fixed pattern noise (FPN) is needed.
Proceedings ArticleDOI
Design of border security system based on ultrasonic technology and video linkage
TL;DR: In this article , an intelligent border system measurement scheme based on ultrasonic sensing technology is designed in which the measurement scheme is composed of the sensing detection module and the data processing module, where the main sensing detector is the outdoor sensor probe, which consists of the network controller, the network management module, the sensor and the sensor interface.
References
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TL;DR: A compact model of bipolar transistors suitable for network analysis computer programs is presented, through the use of a new charge control relation linking junction voltages, collector current, and base charge, which substantially exceeds that of existing models of comparable complexity.
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TL;DR: In this article, the authors present various methods of utilizing bipolar transistors and integrated circuits as temperature transducers and compare the accuracy, stability and calibration problems of different transducers compared with each other.
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A CMOS voltage reference
Yannis Tsividis,R.W. Ulmer +1 more
TL;DR: A method for developing a reference voltage in CMOS integrated circuits is described, and the principle of the suggested voltage reference is explained and the final implementation is presented.
Journal ArticleDOI
A new NMOS temperature-stable voltage reference
TL;DR: In this paper, an NMOS voltage reference was developed that exhibits extremely low drift with temperature, which is based on the difference between the gate/source voltages of enhancement and depletion-mode NMOS transistors.