AU2001261856A1 - High impedance bias device - Google Patents
High impedance bias deviceInfo
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-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
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is DC
- G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/205—Substrate bias-voltage generators
-
- 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
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/301—Modifications 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)
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)
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)
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 |
-
2000
- 2000-05-22 US US09/577,730 patent/US6353344B1/en not_active Expired - Fee Related
-
2001
- 2001-05-21 AU AU2001261856A patent/AU2001261856A1/en not_active Abandoned
- 2001-05-21 EP EP01935795A patent/EP1285492A1/en not_active Withdrawn
- 2001-05-21 WO PCT/US2001/040786 patent/WO2001091280A1/en not_active Application Discontinuation
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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