JPH09331250A - チャージポンプ回路及びｐｌｌ周波数シンセサイザ - Google Patents

チャージポンプ回路及びｐｌｌ周波数シンセサイザ

Info

Publication number
JPH09331250A
JPH09331250A JP8150641A JP15064196A JPH09331250A JP H09331250 A JPH09331250 A JP H09331250A JP 8150641 A JP8150641 A JP 8150641A JP 15064196 A JP15064196 A JP 15064196A JP H09331250 A JPH09331250 A JP H09331250A
Authority
JP
Japan
Prior art keywords
current
charge pump
pump circuit
output
generating means
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
JP8150641A
Other languages
English (en)
Japanese (ja)
Other versions
JPH09331250A5 (enExample
Inventor
Kazuaki Oishi
和明 大石
Kiyonaga Nagaya
清永 長屋
Kimitoshi Nirazuka
公利 韮塚
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8150641A priority Critical patent/JPH09331250A/ja
Publication of JPH09331250A publication Critical patent/JPH09331250A/ja
Publication of JPH09331250A5 publication Critical patent/JPH09331250A5/ja
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
JP8150641A 1996-06-12 1996-06-12 チャージポンプ回路及びｐｌｌ周波数シンセサイザ Pending JPH09331250A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8150641A JPH09331250A (ja) 1996-06-12 1996-06-12 チャージポンプ回路及びｐｌｌ周波数シンセサイザ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8150641A JPH09331250A (ja) 1996-06-12 1996-06-12 チャージポンプ回路及びｐｌｌ周波数シンセサイザ

Publications (2)

Publication Number Publication Date
JPH09331250A true JPH09331250A (ja) 1997-12-22
JPH09331250A5 JPH09331250A5 (enExample) 2005-03-17

Family

ID=15501296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8150641A Pending JPH09331250A (ja) 1996-06-12 1996-06-12 チャージポンプ回路及びｐｌｌ周波数シンセサイザ

Country Status (1)

Country Link
JP (1) JPH09331250A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6384668B2 (en) 1999-01-29 2002-05-07 Nec Corporation Charge pump circuit
JP2007514348A (ja) * 2003-12-11 2007-05-31 モサイド・テクノロジーズ・インコーポレイテッド Ｐｌｌ／ｄｌｌ用の高出力インピーダンスチャージポンプ
KR100813461B1 (ko) * 2006-06-02 2008-03-13 (주)에프씨아이 주파수 합성기

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6384668B2 (en) 1999-01-29 2002-05-07 Nec Corporation Charge pump circuit
JP2007514348A (ja) * 2003-12-11 2007-05-31 モサイド・テクノロジーズ・インコーポレイテッド Ｐｌｌ／ｄｌｌ用の高出力インピーダンスチャージポンプ
JP2011182467A (ja) * 2003-12-11 2011-09-15 Mosaid Technologies Inc Ｐｌｌ／ｄｌｌ用の高出力インピーダンスチャージポンプ
US8049541B2 (en) 2003-12-11 2011-11-01 Mosaid Technologies Incorporated Charge pump for PLL/DLL
JP4914219B2 (ja) * 2003-12-11 2012-04-11 モサイド・テクノロジーズ・インコーポレーテッド Ｐｌｌ／ｄｌｌ用の高出力インピーダンスチャージポンプを備えたロックループ
US8222937B2 (en) 2003-12-11 2012-07-17 Mosaid Technologies Incorporated Charge pump for PLL/DLL
USRE47715E1 (en) 2003-12-11 2019-11-05 Conversant Intellectual Property Management Inc. Charge pump for PLL/DLL
USRE49018E1 (en) 2003-12-11 2022-04-05 Mosaid Technologies Incorporated Charge pump for PLL/DLL
KR100813461B1 (ko) * 2006-06-02 2008-03-13 (주)에프씨아이 주파수 합성기

Similar Documents

Publication Publication Date Title
US6680655B2 (en) Automatic gain control for a voltage controlled oscillator
US6909336B1 (en) Discrete-time amplitude control of voltage-controlled oscillator
US7902929B2 (en) Analogue self-calibration method and apparatus for low noise, fast and wide-locking range phase locked loop
EP1216508A1 (en) Pll loop filter with switched-capacitor resistor
JP2007525108A (ja) 電圧制御デジタルアナログ発振器およびこれを用いた周波数シンセサイザ
JPH03198524A (ja) 補償されるフェーズロックループ回路
KR100546944B1 (ko) 저전류전하펌프용의출력단및이러한펌프를일체화시킨복조기
US6853262B2 (en) Voltage-controlled oscillator circuit which compensates for supply voltage fluctuations
US5565821A (en) Voltage controlled oscillator with improved tuning linearity
US6275116B1 (en) Method, circuit and/or architecture to improve the frequency range of a voltage controlled oscillator
US6091309A (en) Tunable low noise oscillator using delay lines and ring mode trap filter
US7471164B2 (en) Oscillator and method for operating an oscillator
JP2842847B2 (ja) Ｐｌｌシンセサイザ回路
US6724273B1 (en) Filter circuitry for voltage controlled oscillator
JP4030291B2 (ja) 電圧供給回路
US7501907B1 (en) Self-biased active VCO level shifter
JPH09331250A (ja) チャージポンプ回路及びｐｌｌ周波数シンセサイザ
JPH07176996A (ja) 電流制御発振器
JP3563678B2 (ja) 高周波受信装置
US5627498A (en) Multiple frequency oscillator
US6384668B2 (en) Charge pump circuit
US6492879B2 (en) Voltage-controlled oscillator
JP2004056720A (ja) 電圧制御発振器並びにそれを用いた高周波受信器及び高周波送信器
US7394329B2 (en) Analog varactor
JP4657406B2 (ja) 電圧制御発振器

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040415

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20040415

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040423

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20040422

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040511

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040712

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20040817