GB0912934D0 - Improvements in or relating to phase locked loops - Google Patents

Improvements in or relating to phase locked loops

Info

Publication number
GB0912934D0
GB0912934D0 GBGB0912934.7A GB0912934A GB0912934D0 GB 0912934 D0 GB0912934 D0 GB 0912934D0 GB 0912934 A GB0912934 A GB 0912934A GB 0912934 D0 GB0912934 D0 GB 0912934D0
Authority
GB
United Kingdom
Prior art keywords
relating
phase locked
locked loops
loops
phase
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.)
Withdrawn
Application number
GBGB0912934.7A
Other versions
GB2473179A (en
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.)
Texas Instruments Ltd
Original Assignee
Texas Instruments 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 Texas Instruments Ltd filed Critical Texas Instruments Ltd
Priority to GB0912934A priority Critical patent/GB2473179A/en
Publication of GB0912934D0 publication Critical patent/GB0912934D0/en
Publication of GB2473179A publication Critical patent/GB2473179A/en
Withdrawn legal-status Critical Current

Links

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
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics 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
    • H03L7/08—Details of the phase-locked 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
    • H03L7/08—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
    • 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
    • H03L7/0893—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 the up-down pulses controlling at least two source current generators or at least two sink current generators connected to different points in the loop
GB0912934A 2009-07-24 2009-07-24 Phase locked loop with leakage current compensation circuit Withdrawn GB2473179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0912934A GB2473179A (en) 2009-07-24 2009-07-24 Phase locked loop with leakage current compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0912934A GB2473179A (en) 2009-07-24 2009-07-24 Phase locked loop with leakage current compensation circuit

Publications (2)

Publication Number Publication Date
GB0912934D0 true GB0912934D0 (en) 2009-09-02
GB2473179A GB2473179A (en) 2011-03-09

Family

ID=41066800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0912934A Withdrawn GB2473179A (en) 2009-07-24 2009-07-24 Phase locked loop with leakage current compensation circuit

Country Status (1)

Country Link
GB (1) GB2473179A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103036557B (en) * 2011-09-29 2018-03-09 德克萨斯仪器德国股份有限公司 The method of electronic equipment and control controlled oscillator including phaselocked loop
US9166607B2 (en) 2012-03-01 2015-10-20 Qualcomm Incorporated Capacitor leakage compensation for PLL loop filter capacitor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6570422B1 (en) * 2002-07-19 2003-05-27 Sun Microsystems, Inc. Phase locked loop design with switch for loop filter capacitance leakage current control
US6963232B2 (en) * 2003-08-11 2005-11-08 Rambus, Inc. Compensator for leakage through loop filter capacitors in phase-locked loops
TWI233265B (en) * 2004-06-18 2005-05-21 Via Tech Inc Phase locked loop circuit
TWI311865B (en) * 2005-07-01 2009-07-01 Via Tech Inc Clock and data recovery circuit and method thereof
US20080157879A1 (en) * 2006-12-28 2008-07-03 Dmitry Petrov Decreasing frequency synthesizer lock time for a phase locked loop
US7777577B2 (en) * 2007-09-28 2010-08-17 Texas Instruments Incorporated Dual path phase locked loop (PLL) with digitally programmable damping

Also Published As

Publication number Publication date
GB2473179A (en) 2011-03-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)