GB2544835B - Current sense amplifier with common mode rejection - Google Patents

Current sense amplifier with common mode rejection Download PDF

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Publication number
GB2544835B
GB2544835B GB1610045.5A GB201610045A GB2544835B GB 2544835 B GB2544835 B GB 2544835B GB 201610045 A GB201610045 A GB 201610045A GB 2544835 B GB2544835 B GB 2544835B
Authority
GB
United Kingdom
Prior art keywords
sense amplifier
common mode
current sense
mode rejection
rejection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB1610045.5A
Other versions
GB201610045D0 (en
GB2544835A (en
Inventor
Parupalli Vamsikrishna
Tyagi Itisha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cirrus Logic International Semiconductor Ltd
Original Assignee
Cirrus Logic International Semiconductor Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US15/069,518 external-priority patent/US10132844B2/en
Application filed by Cirrus Logic International Semiconductor Ltd filed Critical Cirrus Logic International Semiconductor Ltd
Publication of GB201610045D0 publication Critical patent/GB201610045D0/en
Publication of GB2544835A publication Critical patent/GB2544835A/en
Application granted granted Critical
Publication of GB2544835B publication Critical patent/GB2544835B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M1/0607—Offset or drift compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • H03F3/45928—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • H03F3/45928—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit
    • H03F3/4595—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit by using feedforward means
    • H03F3/45955—Measuring at the input circuit of the differential amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0675—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy
    • H03M1/0678—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components
    • H03M1/068—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components the original and additional components or elements being complementary to each other, e.g. CMOS
    • H03M1/0682—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components the original and additional components or elements being complementary to each other, e.g. CMOS using a differential network structure, i.e. symmetrical with respect to ground
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H03M1/1033—Calibration over the full range of the converter, e.g. for correcting differential non-linearity
    • H03M1/1038—Calibration over the full range of the converter, e.g. for correcting differential non-linearity by storing corrected or correction values in one or more digital look-up tables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0023—Measuring currents or voltages from sources with high internal resistance by means of measuring circuits with high input impedance, e.g. OP-amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/462—Indexing scheme relating to amplifiers the current being sensed
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45048—Calibrating and standardising a dif amp
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45528—Indexing scheme relating to differential amplifiers the FBC comprising one or more passive resistors and being coupled between the LC and the IC

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
GB1610045.5A 2015-11-17 2016-06-08 Current sense amplifier with common mode rejection Active GB2544835B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562256558P 2015-11-17 2015-11-17
US15/069,518 US10132844B2 (en) 2015-11-17 2016-03-14 Current sense amplifier with common mode rejection

Publications (3)

Publication Number Publication Date
GB201610045D0 GB201610045D0 (en) 2016-07-20
GB2544835A GB2544835A (en) 2017-05-31
GB2544835B true GB2544835B (en) 2020-02-12

Family

ID=56508289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1610045.5A Active GB2544835B (en) 2015-11-17 2016-06-08 Current sense amplifier with common mode rejection

Country Status (1)

Country Link
GB (1) GB2544835B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090096654A1 (en) * 2005-01-27 2009-04-16 Electro Industries/Gauge Tech. Intelligent Electronic Device Having Circuitry for Noise Reduction for Analog-to-Digital Converters
US7782235B1 (en) * 2007-04-30 2010-08-24 V Corp Technologies, Inc. Adaptive mismatch compensators and methods for mismatch compensation
US20120229264A1 (en) * 2011-03-09 2012-09-13 Analog Devices, Inc. Smart linear resonant actuator control
US20130265035A1 (en) * 2012-04-10 2013-10-10 Federico Mazzarella System and method for current measurement in the presence of high common mode voltages
US20140177850A1 (en) * 2012-12-20 2014-06-26 Qualcomm Incorporated Switch techniques for load sensing
US20140218011A1 (en) * 2013-02-01 2014-08-07 Broadcom Corporation Dynamic power profiling
US20150236662A1 (en) * 2014-02-19 2015-08-20 Analog Devices Global Apparatus and methods for improving common mode rejection ratio
WO2016039858A1 (en) * 2014-09-08 2016-03-17 Qualcomm Incorporated Low power small area oscillator-based adc

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090096654A1 (en) * 2005-01-27 2009-04-16 Electro Industries/Gauge Tech. Intelligent Electronic Device Having Circuitry for Noise Reduction for Analog-to-Digital Converters
US7782235B1 (en) * 2007-04-30 2010-08-24 V Corp Technologies, Inc. Adaptive mismatch compensators and methods for mismatch compensation
US20120229264A1 (en) * 2011-03-09 2012-09-13 Analog Devices, Inc. Smart linear resonant actuator control
US20130265035A1 (en) * 2012-04-10 2013-10-10 Federico Mazzarella System and method for current measurement in the presence of high common mode voltages
US20140177850A1 (en) * 2012-12-20 2014-06-26 Qualcomm Incorporated Switch techniques for load sensing
US20140218011A1 (en) * 2013-02-01 2014-08-07 Broadcom Corporation Dynamic power profiling
US20150236662A1 (en) * 2014-02-19 2015-08-20 Analog Devices Global Apparatus and methods for improving common mode rejection ratio
WO2016039858A1 (en) * 2014-09-08 2016-03-17 Qualcomm Incorporated Low power small area oscillator-based adc

Also Published As

Publication number Publication date
GB201610045D0 (en) 2016-07-20
GB2544835A (en) 2017-05-31

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