Circuits and methods to produce a VPTAT and/or a bandgap voltage

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7880459
APP PUB NO 20080278137A1
SERIAL NO

12111796

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided herein are circuits and methods to generate a voltage proportional to absolute temperature (VPTAT) and/or a bandgap voltage output (VGO). A circuit includes a group of X transistors. A first subgroup of the X transistors are used to produce a first base-emitter voltage (VBE1). A second subgroup of the X transistors are used to produce a second base-emitter voltage (VBE2). The VPTAT can be produced by determining a difference between VBE1 and VBE2. Which of the X transistors are in the first subgroup and used to produce the first base-emitter voltage (VBE1), and/or which of the X transistors are in the second subgroup and used to produce the second base-emitter voltage (VBE2), change over time. Additionally, a circuit portion can be used to generates a voltage complimentary to absolute temperature (VCTAT) using at least one of the X transistors. The VPTAT and the VCTAT can be added to produce the VGO.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTERSIL AMERICAS LLCMILPITAS, CA, US891

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harvey, Barry Los Altos, US 36 255

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CYPRESS SEMICONDUCTOR CORPORATION (1)
* 2007/0152,740 Low power bandgap reference circuit with increased accuracy and reduced area consumption 8 2005
 
TESSERA ADVANCED TECHNOLOGIES, INC. (1)
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U.S. PHILIPS CORPORATION (1)
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SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC (1)
5796280 Thermal limit circuit with built-in hysteresis 11 1997
 
SEIKO INSTRUMENTS INC. (1)
7368973 Temperature sensor circuit 13 2004
 
GLOBALFOUNDRIES INC. (1)
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HIMAX TECHNOLOGIES, INC. (1)
7312648 Temperature sensor 15 2005
 
NXP USA, INC. (1)
6019508 Integrated temperature sensor 41 1998
 
SILICON LABORATORIES INC. (1)
7321225 Voltage reference generator circuit using low-beta effect of a CMOS bipolar transistor 15 2004
 
MICREL, INC. (1)
6008685 Solid state temperature measurement 115 1998
 
ANALOG DEVICES, INC. (3)
5519354 Integrated circuit temperature sensor with a programmable offset 39 1995
5982221 Switched current temperature sensor circuit with compounded .DELTA.V.sub.BE 69 1997
7170334 Switched current temperature sensing circuit and method to correct errors due to beta and series resistance 13 2005
 
INTERSIL AMERICAS LLC (1)
6914475 Bandgap reference circuit for low supply voltage applications 8 2002
 
STANDARD MICROSYSTEMS CORPORATION (2)
7281846 Integrated resistance cancellation in temperature measurement systems 55 2004
7193543 Conversion clock randomization for EMI immunity in temperature sensors 15 2005
 
NATIONAL SEMICONDUCTOR CORPORATION (4)
6736540 Method for synchronized delta-VBE measurement for calculating die temperature 31 2003
6957910 Synchronized delta-VBE measurement system 29 2004
7309157 Apparatus and method for calibration of a temperature sensor 12 2004
7236048 Self-regulating process-error trimmable PTAT current source 20 2005
 
DELPHI TECHNOLOGIES, INC. (1)
5619122 Temperature dependent voltage generator with binary adjustable null voltage 24 1995
 
RENESAS ELECTRONICS CORPORATION (1)
6890097 Temperature measuring sensor incorporated in semiconductor substrate, and semiconductor device containing such temperature measuring sensor 28 2003
 
TEXAS INSTRUMENTS INCORPORATED (1)
7083328 Remote diode temperature sense method with parasitic resistance cancellation 14 2004
 
KABUSHIKI KAISHA TOSHIBA (1)
6037832 Temperature dependent constant-current generating circuit and light emitting semiconductor element driving circuit using the same 46 1998
 
GLOBAL MIXED-MODE TECHNOLOGY INC. (1)
7341374 Temperature measurement circuit calibrated through shifting a conversion reference level 14 2005
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MICROCHIP TECHNOLOGY INCORPORATED (2)
* 8022751 Systems and methods for trimming bandgap offset with bipolar elements 5 2009
* 2010/0123,514 SYSTEMS AND METHODS FOR TRIMMING BANDGAP OFFSET WITH BIPOLAR DIODE ELEMENTS 4 2009
 
HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO., LTD. (2)
* 8193854 Bi-directional trimming methods and circuits for a precise band-gap reference 6 2010
* 2011/0163,799 Bi-directional Trimming Methods and Circuits for a Precise Band-Gap Reference 3 2010
 
CYPRESS SEMICONDUCTOR CORPORATION (3)
8516025 Clock driven dynamic datapath chaining 4 2008
* 8130025 Numerical band gap 3 2008
8476928 System level interconnect with programmable switching 4 2011
 
INTEGRATED DEVICE TECHNOLOGY, INC. (2)
* 9506817 Temperature detection method and device with improved accuracy and conversion time 0 2012
* 2013/0301,680 TEMPERATURE DETECTION METHOD AND DEVICE WITH IMPROVED ACCURACY AND CONVERSION TIME 1 2012
 
MONTEREY RESEARCH, LLC (1)
8462576 State-monitoring memory element 0 2011
 
PANASONIC CORPORATION (2)
* 8779750 Reference voltage generating circuit and reference voltage source 0 2013
* 2013/0241,526 REFERENCE VOLTAGE GENERATING CIRCUIT AND REFERENCE VOLTAGE SOURCE 3 2013
 
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. (1)
* 9612606 Bandgap reference circuit 0 2012
 
MSTAR SEMICONDUCTOR, INC. (1)
* 7915947 PTAT sensor and temperature sensing method thereof 3 2009
 
INTERSIL AMERICAS LLC (4)
8446140 Circuits and methods to produce a bandgap voltage with low-drift 2 2010
8278905 Rotating gain resistors to produce a bandgap voltage with low-drift 0 2010
8330445 Circuits and methods to produce a VPTAT and/or a bandgap voltage with low-glitch preconditioning 4 2010
* 2011/0084,681 CIRCUITS AND METHODS TO PRODUCE A VPTAT AND/OR A BANDGAP VOLTAGE WITH LOW-GLITCH PRECONDITIONING 1 2010
* Cited By Examiner

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