JP4421467B2 - 位相同期回路 - Google Patents
位相同期回路 Download PDFInfo
- Publication number
- JP4421467B2 JP4421467B2 JP2004374265A JP2004374265A JP4421467B2 JP 4421467 B2 JP4421467 B2 JP 4421467B2 JP 2004374265 A JP2004374265 A JP 2004374265A JP 2004374265 A JP2004374265 A JP 2004374265A JP 4421467 B2 JP4421467 B2 JP 4421467B2
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- JP
- Japan
- Prior art keywords
- circuit
- gain
- current
- setting
- charge pump
- 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.)
- Expired - Fee Related
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- 238000005259 measurement Methods 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000004044 response Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
- 230000015654 memory Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
- H03L7/0995—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator comprising a ring oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
- H03L7/0895—Details of the current generators
- H03L7/0898—Details of the current generators the source or sink current values being variable
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
- H03L7/1976—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
M. H. Perrott, M. D. Trott, and C. G. Sodini, "A Modeling Approach for Σ-Δ Fractional-N Frequency Synthesizers Allowing Straightforward Noise Analysis", August 2002, IEEE Journal of Solid-State Circuits, vol. 37, pp. 1028-1038
Ko=(f2−f1)/(V2−V1)
で与えられる。ここで、電圧V1と電圧V2との電位差を単位電圧に設定しておくことで(V2−V1=1)、ゲインKoは周波数f1及びf2から測定することができる(Ko=f2−f1)。
f=Ip/Cd/2
で与えられる。したがって、周波数fが所定値となるように電流Ipを調整することでIp/Cdを所望値に設定することができる。さらに、ループフィルタ30の容量値Cは容量72の容量値Cdの所定倍であるため(C=αCd)、Ip/Cdを所望値に設定することは、すなわち、位相同期回路の時定数Ip/Cを所望値に設定することに等しい。
30 ループフィルタ
40 電圧制御発振器
60 ゲイン設定回路
61 切替部
62 ゲイン測定部
63 ゲイン制御部
64 ゲイン設定部
70 時定数設定回路
71 ダミーチャージポンプ回路
72 容量
73 信号生成部
74 周波数測定部
75 電流制御部
76 電流設定部
80 温度補償回路
83 ダイオード
84 抵抗
86 カレントミラー回路
Claims (5)
- 電圧制御発振器のゲインを設定するゲイン設定回路と、
チャージポンプ回路の電流の大きさ及びループフィルタの容量値から決定される時定数を設定する時定数設定回路とを備え、
前記時定数設定回路は、
第1及び第2の信号に従ってプッシュプル動作を行うダミーチャージポンプ回路と、
前記ダミーチャージポンプ回路から出力された電流を受ける容量と、
前記容量に生じた電圧に基づいて前記第1及び第2の信号を生成する信号生成部と、
前記第1及び第2の信号のいずれかの周波数を測定する周波数測定部と、
与えられた制御信号に従って前記ダミーチャージポンプ回路及び前記チャージポンプ回路の電流の大きさを設定する電流設定部と、
前記周波数測定部によって測定された周波数と期待値との差分に基づいて前記制御信号を生成する電流制御部とを有する
ことを特徴とする位相同期回路。 - 請求項1に記載の位相同期回路において、
温度変化に応じて前記チャージポンプ回路の電流の大きさを調整する温度補償回路を備えた
ことを特徴とする位相同期回路。 - 請求項1に記載の位相同期回路において、
前記ゲイン設定回路は、
前記電圧制御発振器の入力を切り替える切替部と、
前記切替部によって前記電圧制御発振器に第1及び第2の電圧がそれぞれ入力されたときの前記電圧制御発振器の出力差に基づいて前記ゲインを測定するゲイン測定部と、
与えられた制御信号に従って前記ゲインを設定するゲイン設定部と、
前記ゲイン測定部によって測定されたゲインと期待値との差分に基づいて前記制御信号を生成するゲイン制御部とを有する
ことを特徴とする位相同期回路。 - 請求項1に記載の位相同期回路において、
温度変化に応じて増大する電流を出力する温度補償回路を備え、
前記電流設定部は、前記温度補償回路から出力された電流に基づいて、前記ダミーチャージポンプ回路及び前記チャージポンプ回路の電流の大きさを設定する
ことを特徴とする位相同期回路。 - 請求項2に記載の位相同期回路において、
前記温度補償回路は、
ダイオードと、
前記ダイオードに直列に接続された抵抗と、
前記抵抗に流れる電流を入力とするカレントミラー回路とを有し、
前記ダイオード及び抵抗には一定電圧が印可される
ことを特徴とする位相同期回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004374265A JP4421467B2 (ja) | 2004-12-24 | 2004-12-24 | 位相同期回路 |
US11/269,742 US7298219B2 (en) | 2004-12-24 | 2005-11-09 | Phase-locked loop circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004374265A JP4421467B2 (ja) | 2004-12-24 | 2004-12-24 | 位相同期回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006180428A JP2006180428A (ja) | 2006-07-06 |
JP4421467B2 true JP4421467B2 (ja) | 2010-02-24 |
Family
ID=36610753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004374265A Expired - Fee Related JP4421467B2 (ja) | 2004-12-24 | 2004-12-24 | 位相同期回路 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7298219B2 (ja) |
JP (1) | JP4421467B2 (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4192888B2 (ja) * | 2004-12-17 | 2008-12-10 | 日本電気株式会社 | Pll回路及びその制御方法 |
JP2007158891A (ja) * | 2005-12-07 | 2007-06-21 | Matsushita Electric Ind Co Ltd | 周波数シンセサイザ及び無線通信機器並びに制御方法 |
BRPI0708235A2 (pt) * | 2006-02-24 | 2011-05-17 | Nihon Dempa Kogyo Co | circuito de pll |
KR100744912B1 (ko) * | 2006-05-26 | 2007-08-01 | 삼성전기주식회사 | 자가조정 기능을 갖는 rc 발진기 |
JP2008053784A (ja) * | 2006-08-22 | 2008-03-06 | Toshiba Corp | 電圧制御発振器、電圧制御発振器用のバイアス装置、電圧制御発振器のバイアス調整プログラム |
US7898344B2 (en) * | 2006-09-12 | 2011-03-01 | Fujitsu Limited | Phase-locked oscillator and multi-radar system using same |
JP2008072166A (ja) * | 2006-09-12 | 2008-03-27 | Sony Corp | 位相同期回路および電子機器 |
JP4866707B2 (ja) * | 2006-11-10 | 2012-02-01 | パナソニック株式会社 | Pll回路及び信号送受信システム |
WO2008084525A1 (ja) * | 2007-01-09 | 2008-07-17 | Fujitsu Limited | バラツキ補正方法、pll回路及び半導体集積回路 |
TWI361568B (en) * | 2007-01-30 | 2012-04-01 | Mosaid Technologies Inc | Delay-locked loop and a method for providing charge signal to a charge pump of the same |
FI20075292A0 (fi) * | 2007-04-26 | 2007-04-26 | Nokia Corp | Oskillaattorisignaalin stabilisointi |
CN101682296B (zh) * | 2007-05-30 | 2012-05-02 | 松下电器产业株式会社 | 扩展频谱控制锁相环电路及其启动方法 |
US20090072911A1 (en) * | 2007-09-14 | 2009-03-19 | Ling-Wei Ke | Signal generating apparatus and method thereof |
US7786771B2 (en) * | 2008-05-27 | 2010-08-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Phase lock loop (PLL) with gain control |
JP2010035098A (ja) * | 2008-07-31 | 2010-02-12 | Sony Corp | 位相同期回路並びに記録再生装置および電子機器 |
WO2010025563A1 (en) * | 2008-09-05 | 2010-03-11 | Icera Canada ULC | Method and system for calibrating a frequency synthesizer |
US8378751B2 (en) * | 2009-02-13 | 2013-02-19 | Qualcomm Incorporated | Frequency synthesizer with multiple tuning loops |
US9720074B2 (en) * | 2014-02-05 | 2017-08-01 | Nxp Usa, Inc. | Circuitry for and method of generating a frequency modulated radar transmitter signal, a radar transceiver circuit and a radar system |
US9459292B2 (en) | 2014-03-20 | 2016-10-04 | Qualcomm Incorporated | VCO gain estimation by capacitive measurement |
JP6736339B2 (ja) * | 2016-04-19 | 2020-08-05 | ザインエレクトロニクス株式会社 | Pll周波数シンセサイザ |
US10819356B2 (en) | 2017-05-24 | 2020-10-27 | Thine Electronics, Inc. | PLL frequency synthesizer |
JP7165967B2 (ja) * | 2018-10-04 | 2022-11-07 | ザインエレクトロニクス株式会社 | Pll回路 |
KR20220110902A (ko) * | 2021-02-01 | 2022-08-09 | 에스케이하이닉스 주식회사 | 전원 노이즈를 보상하는 위상 고정 루프 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS57204629A (en) * | 1981-06-12 | 1982-12-15 | Nec Corp | Control circuit of pulse width |
US4595886A (en) | 1984-10-19 | 1986-06-17 | Rockwell International Corporation | AC loop gain and DC prepositioning adjustment for phase locked loop |
US5389899A (en) * | 1991-08-30 | 1995-02-14 | Fujitsu Limited | Frequency synthesizer having quick frequency pull in and phase lock-in |
US6023185A (en) * | 1996-04-19 | 2000-02-08 | Cherry Semiconductor Corporation | Temperature compensated current reference |
US6552618B2 (en) * | 2000-12-13 | 2003-04-22 | Agere Systems Inc. | VCO gain self-calibration for low voltage phase lock-loop applications |
US6466100B2 (en) | 2001-01-08 | 2002-10-15 | International Business Machines Corporation | Linear voltage controlled oscillator transconductor with gain compensation |
US6512419B1 (en) * | 2001-03-19 | 2003-01-28 | Cisco Sytems Wireless Networking (Australia) Pty Limited | Method and apparatus to tune and calibrate an on-chip oscillator in a wireless transceiver chip |
-
2004
- 2004-12-24 JP JP2004374265A patent/JP4421467B2/ja not_active Expired - Fee Related
-
2005
- 2005-11-09 US US11/269,742 patent/US7298219B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2006180428A (ja) | 2006-07-06 |
US20060139106A1 (en) | 2006-06-29 |
US7298219B2 (en) | 2007-11-20 |
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