JP2008244623A5 - - Google Patents

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Publication number
JP2008244623A5
JP2008244623A5 JP2007079613A JP2007079613A JP2008244623A5 JP 2008244623 A5 JP2008244623 A5 JP 2008244623A5 JP 2007079613 A JP2007079613 A JP 2007079613A JP 2007079613 A JP2007079613 A JP 2007079613A JP 2008244623 A5 JP2008244623 A5 JP 2008244623A5
Authority
JP
Japan
Prior art keywords
constant voltage
voltage
output
amplifier
voltage regulator
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.)
Pending
Application number
JP2007079613A
Other languages
English (en)
Japanese (ja)
Other versions
JP2008244623A (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2007079613A priority Critical patent/JP2008244623A/ja
Priority claimed from JP2007079613A external-priority patent/JP2008244623A/ja
Priority to US12/055,714 priority patent/US7619479B2/en
Publication of JP2008244623A publication Critical patent/JP2008244623A/ja
Publication of JP2008244623A5 publication Critical patent/JP2008244623A5/ja
Pending legal-status Critical Current

Links

JP2007079613A 2007-03-26 2007-03-26 半導体集積回路 Pending JP2008244623A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007079613A JP2008244623A (ja) 2007-03-26 2007-03-26 半導体集積回路
US12/055,714 US7619479B2 (en) 2007-03-26 2008-03-26 Semiconductor integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007079613A JP2008244623A (ja) 2007-03-26 2007-03-26 半導体集積回路

Publications (2)

Publication Number Publication Date
JP2008244623A JP2008244623A (ja) 2008-10-09
JP2008244623A5 true JP2008244623A5 (enExample) 2009-09-10

Family

ID=39915450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007079613A Pending JP2008244623A (ja) 2007-03-26 2007-03-26 半導体集積回路

Country Status (2)

Country Link
US (1) US7619479B2 (enExample)
JP (1) JP2008244623A (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7554408B2 (en) * 2007-05-21 2009-06-30 National Semiconductor Corporation Apparatus and method for asymmetric charge pump for an audio amplifier
US7830209B1 (en) * 2009-01-19 2010-11-09 Cirrus Logic, Inc. Signal level selected efficiency in a charge pump power supply for a consumer device audio power output stage
TWI387359B (zh) * 2009-01-21 2013-02-21 Ite Tech Inc 耳機的電壓產生裝置
JP5333111B2 (ja) * 2009-09-18 2013-11-06 ヤマハ株式会社 増幅装置
US8004366B2 (en) * 2009-10-29 2011-08-23 Texas Instruments Incorporated Area and power efficient, high swing and monolitihic ground centered headphone amplifier circuit operable on a low voltage
JP2011160031A (ja) * 2010-01-29 2011-08-18 Ricoh Co Ltd 音声音楽再生装置
JP5481262B2 (ja) * 2010-04-08 2014-04-23 ローム株式会社 オーディオ信号処理回路およびそれを用いた電子機器
JP2015201705A (ja) * 2014-04-07 2015-11-12 新日本無線株式会社 計装増幅器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05347519A (ja) 1991-12-31 1993-12-27 Texas Instr Inc <Ti> 演算増幅器
JP3197873B2 (ja) * 1993-06-30 2001-08-13 三洋電機株式会社 電源回路の設計方法および電源回路
US5686860A (en) * 1995-09-25 1997-11-11 Motorola, Inc. Amplifier and controlling apparatus operating from a unipolar power supply
JP2000040385A (ja) 1998-07-17 2000-02-08 Mitsubishi Electric Corp 半導体装置
US7183857B2 (en) * 2002-01-24 2007-02-27 Maxim Integrated Products Inc. Single supply direct drive amplifier
US7378904B2 (en) * 2003-10-15 2008-05-27 Texas Instruments Incorporated Soft transitions between muted and unmuted states in class D audio amplifiers
US6922099B2 (en) * 2003-10-21 2005-07-26 Saifun Semiconductors Ltd. Class AB voltage regulator
JP4970759B2 (ja) * 2004-09-20 2012-07-11 三星電子株式会社 電流消耗が減少した内部電源電圧発生器
JP2007036373A (ja) * 2005-07-22 2007-02-08 Fujifilm Corp カメラモジュール搭載装置及びカメラモジュール用電源装置
KR100809071B1 (ko) * 2006-09-25 2008-03-03 삼성전자주식회사 고전압 발생 회로를 구비하는 반도체 장치 및 그 전압 발생방법

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