WO2006062941A3 - Amplifier system with current-mode servo feedback - Google Patents

Amplifier system with current-mode servo feedback Download PDF

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Publication number
WO2006062941A3
WO2006062941A3 PCT/US2005/044059 US2005044059W WO2006062941A3 WO 2006062941 A3 WO2006062941 A3 WO 2006062941A3 US 2005044059 W US2005044059 W US 2005044059W WO 2006062941 A3 WO2006062941 A3 WO 2006062941A3
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
signal
amplifier system
time
compensation
Prior art date
Application number
PCT/US2005/044059
Other languages
French (fr)
Other versions
WO2006062941A2 (en
Inventor
William H Laletin
Original Assignee
World Energy Labs 2 Inc
William H Laletin
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
Application filed by World Energy Labs 2 Inc, William H Laletin filed Critical World Energy Labs 2 Inc
Priority to CA002589911A priority Critical patent/CA2589911A1/en
Priority to EP05848777A priority patent/EP1820270A4/en
Publication of WO2006062941A2 publication Critical patent/WO2006062941A2/en
Publication of WO2006062941A3 publication Critical patent/WO2006062941A3/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/30—Marginal testing, e.g. by varying supply voltage
    • G01R31/3004—Current or voltage test
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/31706—Testing of digital circuits involving differential digital signals, e.g. testing differential signal circuits, using differential signals for testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/31712—Input or output aspects
    • G01R31/31716—Testing of input or output with loop-back
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/386—Arrangements for measuring battery or accumulator variables using test-loads
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • 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
    • H03F3/45968—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit by offset reduction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/261—Amplifier which being suitable for instrumentation applications
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/91—Indexing scheme relating to amplifiers the amplifier has a current mode topology
    • 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
    • H03F2203/45138—Two or more differential amplifiers in IC-block form are combined, e.g. measuring amplifiers
    • 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
    • H03F2203/45212—Indexing scheme relating to differential amplifiers the differential amplifier being designed to have a reduced offset
    • 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
    • H03F2203/45521—Indexing scheme relating to differential amplifiers the FBC comprising op amp stages, e.g. cascaded stages of the dif amp and being coupled between the LC and the IC
    • 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
    • H03F2203/45592—Indexing scheme relating to differential amplifiers the IC comprising one or more buffer stages other than emitter or source followers between the input signal leads and input leads of the dif amp, e.g. inverter stages

Abstract

A system and method for compensating an amplifier apparatus for low frequency and/or DC components of an externally applied input signal as well as for any voltage offsets contributed by the amplifier circuitry. Band-limited servo feedback is applied to predetermined nodes in the forward gain path to null out unwanted signal components, leaving a residual signal that, when amplified, will be centered around ground, so that the full dynamic range of the amplifier system may be utilized. Consequently, the signal-to-noise ratio available at the output of the amplifier system will be maximized. The servo compensation may either operate in continuous time, or it may be held constant once a suitable level of compensation has been established, or it may be adjusted from time to time to accommodate slow variations of the average DC component of the input signal.
PCT/US2005/044059 2004-12-07 2005-12-07 Amplifier system with current-mode servo feedback WO2006062941A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002589911A CA2589911A1 (en) 2004-12-07 2005-12-07 Amplifier system with current-mode servo feedback
EP05848777A EP1820270A4 (en) 2004-12-07 2005-12-07 Amplifier system with current-mode servo feedback

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/006,350 US7253680B2 (en) 2003-05-21 2004-12-07 Amplifier system with current-mode servo feedback
US11/006,350 2004-12-07

Publications (2)

Publication Number Publication Date
WO2006062941A2 WO2006062941A2 (en) 2006-06-15
WO2006062941A3 true WO2006062941A3 (en) 2006-12-07

Family

ID=36578474

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/044059 WO2006062941A2 (en) 2004-12-07 2005-12-07 Amplifier system with current-mode servo feedback

Country Status (4)

Country Link
US (2) US7253680B2 (en)
EP (1) EP1820270A4 (en)
CA (1) CA2589911A1 (en)
WO (1) WO2006062941A2 (en)

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US7253680B2 (en) 2007-08-07
US20070257733A1 (en) 2007-11-08
EP1820270A2 (en) 2007-08-22
US20050116773A1 (en) 2005-06-02
WO2006062941A2 (en) 2006-06-15
CA2589911A1 (en) 2006-06-15
EP1820270A4 (en) 2009-09-30

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