PTAT sensor and temperature sensing method thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7915947
APP PUB NO 20100219879A1
SERIAL NO

12631138

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Abstract

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A proportional to absolute temperature (PTAT) sensor is capable of reducing a sensing error resulted from a mismatch between circuit components. The PTAT sensor includes a control unit, a sensing unit and a calculation unit. The control unit generates a control signal. The sensing unit, comprising at least a pair of circuit components having a matching relationship, senses an absolute temperature under the first connection configuration and the second connection configuration respectively to generate a first voltage value and a second voltage value, wherein the first connection configuration and the second connection configuration are decided by interchanging the circuit connections of the pair of circuit components according to the control signal. And the calculation unit, coupled to the sensing unit, calculates a PTAT voltage value according to the first voltage value and the second voltage values.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MSTAR SEMICONDUCTOR, INC.HSINCHU HSIEN750

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hsiao, Shuo-Yuan Hsinchu Hsien, TW 12 151
Liu, Ming-Chung Hsinchu Hsien, TW 20 72

Cited Art Landscape

Patent Info (Count) # Cites Year
 
STANDARD MICROSYSTEMS CORPORATION (1)
* 7281846 Integrated resistance cancellation in temperature measurement systems 55 2004
 
AUSTRIAMICROSYSTEMS AG (1)
* 2010/0013,544 Temperature-Dependent Signal Provision 5 2006
 
INTEL CORPORATION (1)
* 7356426 Calibration of thermal sensors for semiconductor dies 5 2004
 
FREESCALE SEMICONDUCTOR, INC. (1)
* 5614816 Low voltage reference circuit and method of operation 16 1995
 
STMICROELECTRONICS S.A. (1)
* 6997606 Threshold temperature sensor comprising room temperature test means 7 2002
 
ANALOG DEVICES, INC. (1)
* 6991369 Method and circuit for the provision of accurately scaled currents 5 2003
 
INTERSIL AMERICAS LLC (1)
* 7880459 Circuits and methods to produce a VPTAT and/or a bandgap voltage 12 2008
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
MICROCHIP TECHNOLOGY INCORPORATED (1)
8723595 Voltage generator 1 2013
 
LATTICE SEMICONDUCTOR CORPORATION (2)
9172366 Collector current driver for a bipolar junction transistor temperature transducer 1 2014
9535445 Transistor matching for generation of precise current ratios 0 2014
* Cited By Examiner

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