JP2009017556A - 周波数可変オシレータ - Google Patents
周波数可変オシレータ Download PDFInfo
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- JP2009017556A JP2009017556A JP2008173400A JP2008173400A JP2009017556A JP 2009017556 A JP2009017556 A JP 2009017556A JP 2008173400 A JP2008173400 A JP 2008173400A JP 2008173400 A JP2008173400 A JP 2008173400A JP 2009017556 A JP2009017556 A JP 2009017556A
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- 230000010355 oscillation Effects 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
- H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
- H03K4/501—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator
- H03K4/502—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator the capacitor being charged from a constant-current source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0231—Astable circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Manipulation Of Pulses (AREA)
Abstract
【解決手段】本発明は、入力信号の電圧レベルを事前に設定された範囲の電流レベルに変換する電圧電流変換回路と、上記電圧電流変換回路からの電流レベルにより周波数を可変して発振する発振回路を含むことを特徴とする。
【選択図】図2
Description
110 電圧電流変換回路
111 電圧調整部
111a 比較器
111b 電圧範囲調整器
112 電圧電流変換部
112a 電圧−電流変換器
112b 電流利得調整器
113 電流制御部
113a 電流演算器
113b 第1電流逓倍器
113c 第2電流逓倍器
120 発振回路
121 充放電部
122 信号生成部
CS1 第1電流源
CS2 第2電流源
SW スイッチ
C キャパシタ
C1 第1比較器
C2 第2比較器
La RSラッチ
Claims (6)
- 入力信号の電圧レベルを事前に設定された範囲の電流レベルに変換する電圧電流変換回路と、
前記電圧電流変換回路からの電流レベルにより周波数を可変して発振する発振回路と、
を含むことを特徴とする周波数可変オシレータ。 - 前記電圧電流変換回路は、
前記入力信号の電圧を事前に設定された電圧レベルに変換する電圧調整部と、
前記電圧調整部からの電圧レベルを事前に設定された範囲の電流レベルに変換する電圧電流変換部と、
前記電圧電流変換部からの電流レベルにより前記発振回路の充放電電流を制御する電流制御部と、
を含むことを特徴とする請求項1に記載の周波数可変オシレータ。 - 前記電圧調整部は、
前記入力信号の電圧レベルとフィードバック電圧の電圧レベルを比較する比較器と、
前記比較器からの出力電圧のレベルを事前に設定された電圧レベルの範囲に調整して前記フィードバック電圧に提供する電圧範囲調整器と、
を含むことを特徴とする請求項2に記載の周波数可変オシレータ。 - 前記電圧電流変換部は、
前記電圧調整部からの電圧を電流に変換する電圧−電流変換器と、
前記電圧−電流変換器からの電流レベルを事前に設定された電流レベル範囲に調整する電流利得調整器と、
を含むことを特徴とする請求項2に記載の周波数可変オシレータ。 - 前記電流制御部は、
前記電圧電流変換部からの電流と事前に設定された基準電流を演算し事前に設定された比を有する第1電流及び第2電流を出力する電流演算器と、
前記電流演算器からの前記第1電流を事前に設定された電流レベルに逓倍する第1電流逓倍器と、
前記電流演算器からの前記第2電流を事前に設定された電流レベルに逓倍する第2電流逓倍器と、
を含むことを特徴とする請求項2に記載の周波数可変オシレータ。 - 前記発振回路は、
前記第1及び第2電流逓倍器からの電流により充放電電流を設定する充放電部と、
前記充放電部の充放電を制御し第1出力信号を生成して、前記第1出力信号の電圧レベルを事前に設定された第1及び第2基準電圧と夫々比較して第2出力信号を生成する信号生成部と、
を含むことを特徴とする請求項5に記載の周波数可変オシレータ。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070066745A KR100910460B1 (ko) | 2007-07-03 | 2007-07-03 | 주파수 가변 오실레이터 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2009017556A true JP2009017556A (ja) | 2009-01-22 |
Family
ID=40214163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008173400A Pending JP2009017556A (ja) | 2007-07-03 | 2008-07-02 | 周波数可変オシレータ |
Country Status (4)
Country | Link |
---|---|
US (1) | US7902932B2 (ja) |
JP (1) | JP2009017556A (ja) |
KR (1) | KR100910460B1 (ja) |
CN (1) | CN101340183B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101598071B1 (ko) * | 2008-12-29 | 2016-02-26 | 주식회사 동부하이텍 | Amoled를 위한 전원 공급 장치 및 방법 |
CN101997521B (zh) * | 2010-11-30 | 2012-12-05 | 四川和芯微电子股份有限公司 | 时钟产生电路 |
US20140005266A1 (en) * | 2010-12-01 | 2014-01-02 | Nostrum Laboratories, Inc. | Topical formulations for administration of omega-3 fatty acids |
US9306459B2 (en) * | 2011-02-15 | 2016-04-05 | System General Corporation | Control circuit for burst switching of power converter and method thereof |
KR101300349B1 (ko) * | 2011-03-09 | 2013-08-28 | 삼성전기주식회사 | 가변 주파수 발진기를 이용한 백라이트 제어용 인버터 |
CN102158203A (zh) * | 2011-04-26 | 2011-08-17 | 杭州芯赛微电子有限公司 | 一种高精度rc振荡器 |
CN103378806A (zh) * | 2012-04-25 | 2013-10-30 | 三星电机株式会社 | 压控振荡装置和驱动压控振荡装置的方法 |
EP3568918A1 (en) | 2017-01-31 | 2019-11-20 | Huawei Technologies Co., Ltd. | Double data rate interpolating analog to digital converter technical field |
Citations (11)
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---|---|---|---|---|
JPS61224514A (ja) * | 1985-03-28 | 1986-10-06 | Sony Corp | 非安定マルチバイブレ−タ |
JPH01277027A (ja) * | 1988-04-28 | 1989-11-07 | Toshiba Corp | デジタル・アナログ変換回路 |
JPH0661801A (ja) * | 1992-08-06 | 1994-03-04 | Mitsubishi Electric Corp | 発振器 |
JPH0685625A (ja) * | 1992-09-03 | 1994-03-25 | Hitachi Ltd | 発振器 |
JPH0865111A (ja) * | 1994-08-19 | 1996-03-08 | Toshiba Corp | 発振回路 |
JPH11220872A (ja) * | 1998-02-03 | 1999-08-10 | Oki Electric Ind Co Ltd | チャージポンプ回路の駆動回路 |
JP2000059181A (ja) * | 1998-08-06 | 2000-02-25 | Yamaha Corp | 電圧制御発振器 |
JP2002043898A (ja) * | 2000-07-24 | 2002-02-08 | Mitsubishi Electric Corp | 発振回路および発振方法 |
JP2004080550A (ja) * | 2002-08-21 | 2004-03-11 | Matsushita Electric Ind Co Ltd | 電圧制御発振器 |
JP2005130092A (ja) * | 2003-10-22 | 2005-05-19 | Yamaha Corp | 電圧制御発振器 |
JP2006121250A (ja) * | 2004-10-20 | 2006-05-11 | Nec Kansai Ltd | 発振回路 |
Family Cites Families (13)
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JPS63135006A (ja) | 1986-11-26 | 1988-06-07 | Oki Electric Ind Co Ltd | 電圧制限回路 |
JP3217557B2 (ja) | 1993-10-01 | 2001-10-09 | 株式会社東芝 | 電圧利得制御回路 |
FI101437B1 (fi) * | 1996-09-25 | 1998-06-15 | Nokia Telecommunications Oy | Jännitesäätöisen oskillaattorin ohjaus |
JPH10242783A (ja) | 1997-02-24 | 1998-09-11 | Ricoh Co Ltd | 電圧制限回路 |
KR19990076264A (ko) * | 1998-03-30 | 1999-10-15 | 윤종용 | 정전류를 이용한 충방전 발진기 및 그 발진 방법 |
KR100272170B1 (ko) * | 1998-08-17 | 2000-11-15 | 윤종용 | 동작영역이 넓은 전압제어발진기 및 이를 사용하는 위상고정루프 |
DE60020451T2 (de) | 1999-06-01 | 2005-10-13 | Fujitsu Ltd., Kawasaki | Komparatorschaltung |
TW550447B (en) | 2000-10-30 | 2003-09-01 | Realtek Semiconductor Corp | Signal generator with adjustable oscillation frequency and its method |
KR100510487B1 (ko) * | 2002-05-28 | 2005-08-26 | 삼성전자주식회사 | 넓은 동기 범위를 갖는 위상동기루프 회로 및 이를 구비한반도체 집적회로 장치 |
US7116181B2 (en) | 2004-12-21 | 2006-10-03 | Actel Corporation | Voltage- and temperature-compensated RC oscillator circuit |
JP2007124394A (ja) * | 2005-10-28 | 2007-05-17 | Mitsumi Electric Co Ltd | 発振器 |
KR101226049B1 (ko) | 2005-12-02 | 2013-01-24 | 페어차일드코리아반도체 주식회사 | 커패시터가 내장된 rc 발진기 집적회로 |
JP2007258981A (ja) * | 2006-03-22 | 2007-10-04 | Fujitsu Ltd | 電圧制御発振回路 |
-
2007
- 2007-07-03 KR KR1020070066745A patent/KR100910460B1/ko not_active IP Right Cessation
-
2008
- 2008-07-02 US US12/166,885 patent/US7902932B2/en active Active
- 2008-07-02 JP JP2008173400A patent/JP2009017556A/ja active Pending
- 2008-07-03 CN CN2008101264764A patent/CN101340183B/zh not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61224514A (ja) * | 1985-03-28 | 1986-10-06 | Sony Corp | 非安定マルチバイブレ−タ |
JPH01277027A (ja) * | 1988-04-28 | 1989-11-07 | Toshiba Corp | デジタル・アナログ変換回路 |
JPH0661801A (ja) * | 1992-08-06 | 1994-03-04 | Mitsubishi Electric Corp | 発振器 |
JPH0685625A (ja) * | 1992-09-03 | 1994-03-25 | Hitachi Ltd | 発振器 |
JPH0865111A (ja) * | 1994-08-19 | 1996-03-08 | Toshiba Corp | 発振回路 |
JPH11220872A (ja) * | 1998-02-03 | 1999-08-10 | Oki Electric Ind Co Ltd | チャージポンプ回路の駆動回路 |
JP2000059181A (ja) * | 1998-08-06 | 2000-02-25 | Yamaha Corp | 電圧制御発振器 |
JP2002043898A (ja) * | 2000-07-24 | 2002-02-08 | Mitsubishi Electric Corp | 発振回路および発振方法 |
JP2004080550A (ja) * | 2002-08-21 | 2004-03-11 | Matsushita Electric Ind Co Ltd | 電圧制御発振器 |
JP2005130092A (ja) * | 2003-10-22 | 2005-05-19 | Yamaha Corp | 電圧制御発振器 |
JP2006121250A (ja) * | 2004-10-20 | 2006-05-11 | Nec Kansai Ltd | 発振回路 |
Also Published As
Publication number | Publication date |
---|---|
US7902932B2 (en) | 2011-03-08 |
KR20090003792A (ko) | 2009-01-12 |
CN101340183B (zh) | 2011-11-09 |
CN101340183A (zh) | 2009-01-07 |
US20090009256A1 (en) | 2009-01-08 |
KR100910460B1 (ko) | 2009-08-04 |
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