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AU2001261856A1 - High impedance bias device - Google Patents

High impedance bias device

Info

Publication number
AU2001261856A1
AU2001261856A1 AU2001261856A AU6185601A AU2001261856A1 AU 2001261856 A1 AU2001261856 A1 AU 2001261856A1 AU 2001261856 A AU2001261856 A AU 2001261856A AU 6185601 A AU6185601 A AU 6185601A AU 2001261856 A1 AU2001261856 A1 AU 2001261856A1
Authority
AU
Australia
Prior art keywords
high impedance
bias device
impedance bias
impedance
bias
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.)
Abandoned
Application number
AU2001261856A
Inventor
Adrianus M. Lafort
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.)
Microtronic Nederland BV
Original Assignee
Microtronic Nederland BV
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 Microtronic Nederland BV filed Critical Microtronic Nederland BV
Publication of AU2001261856A1 publication Critical patent/AU2001261856A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02Regulating voltage or current
    • G05F3/08Regulating voltage or current wherein the variable is DC
    • G05F3/10Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/205Substrate bias-voltage generators
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/301Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in MOSFET amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
AU2001261856A 2000-05-22 2001-05-21 High impedance bias device Abandoned AU2001261856A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09577730 2000-05-22
US09/577,730 US6353344B1 (en) 2000-05-22 2000-05-22 High impedance bias circuit
PCT/US2001/040786 WO2001091280A1 (en) 2000-05-22 2001-05-21 High impedance bias device

Publications (1)

Publication Number Publication Date
AU2001261856A1 true AU2001261856A1 (en) 2001-12-03

Family

ID=24309929

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001261856A Abandoned AU2001261856A1 (en) 2000-05-22 2001-05-21 High impedance bias device

Country Status (4)

Country Link
US (1) US6353344B1 (en)
EP (1) EP1285492A1 (en)
AU (1) AU2001261856A1 (en)
WO (1) WO2001091280A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW588232B (en) * 2002-01-25 2004-05-21 Richtek Technology Corp Resistor mirror circuit
US7092538B2 (en) * 2002-04-15 2006-08-15 Knowles Electronics, Llc Switched microphone buffer
US7149317B2 (en) * 2002-04-18 2006-12-12 Sonionmicrotronic Nederland B.V. CMOS high impedance circuit
US7072482B2 (en) 2002-09-06 2006-07-04 Sonion Nederland B.V. Microphone with improved sound inlet port
JP2004248014A (en) * 2003-02-14 2004-09-02 Matsushita Electric Ind Co Ltd Current sources and amplifiers
US20050078841A1 (en) * 2003-10-14 2005-04-14 Boor Steven E. Method and apparatus for resetting a buffer amplifier
DE602005010129D1 (en) * 2004-01-12 2008-11-20 Sonion As Amplifier circuit for capacitive converters
US7978863B2 (en) * 2006-06-26 2011-07-12 Nokia Corporation Apparatus and method to provide advanced microphone bias
CN101287304B (en) * 2006-12-18 2013-02-06 桑尼奥公司 Deep Submicron MOS Preamplifier with Thick Oxide Input Stage Transistors
US8401208B2 (en) * 2007-11-14 2013-03-19 Infineon Technologies Ag Anti-shock methods for processing capacitive sensor signals
US8536924B2 (en) * 2010-09-02 2013-09-17 Fairchild Semiconductor Corporation High-impedance network
US8829991B2 (en) 2011-01-14 2014-09-09 Fairchild Semiconductor Corporation DC offset tracking circuit
US9080920B2 (en) 2013-03-05 2015-07-14 Measurement Specialties, Inc. System and method for multiplexed and buffered miniaturized sensor arrays
US10516935B2 (en) 2015-07-15 2019-12-24 Knowles Electronics, Llc Hybrid transducer
US9843292B2 (en) 2015-10-14 2017-12-12 Knowles Electronics, Llc Method and apparatus for maintaining DC bias
WO2017083679A1 (en) 2015-11-12 2017-05-18 Knowles Electronics, Llc Method and apparatus to increase audio band microphone sensitivity

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446413A (en) 1994-05-20 1995-08-29 Knowles Electronics, Inc. Impedance circuit for a miniature hearing aid
US5589799A (en) 1994-09-29 1996-12-31 Tibbetts Industries, Inc. Low noise amplifier for microphone
JPH0951238A (en) * 1995-08-09 1997-02-18 Mitsubishi Electric Corp Microwave amplifier circuit
US6023194A (en) 1997-05-23 2000-02-08 Tibbetts Industries, Inc. Amplifier with reduced input capacitance
US6107893A (en) * 1998-12-02 2000-08-22 Micron Technology, Inc. Voltage tunable active inductorless oscillator

Also Published As

Publication number Publication date
US6353344B1 (en) 2002-03-05
EP1285492A1 (en) 2003-02-26
WO2001091280A1 (en) 2001-11-29

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