WO2008048644A3 - Crystal oscillator emulator - Google Patents

Crystal oscillator emulator Download PDF

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Publication number
WO2008048644A3
WO2008048644A3 PCT/US2007/022168 US2007022168W WO2008048644A3 WO 2008048644 A3 WO2008048644 A3 WO 2008048644A3 US 2007022168 W US2007022168 W US 2007022168W WO 2008048644 A3 WO2008048644 A3 WO 2008048644A3
Authority
WO
WIPO (PCT)
Prior art keywords
calibration parameters
feedback loop
crystal oscillator
integrated circuit
temperature
Prior art date
Application number
PCT/US2007/022168
Other languages
French (fr)
Other versions
WO2008048644A2 (en
Inventor
Sehat Sutardja
Original Assignee
Marvell World Trade Ltd
Sehat Sutardja
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
Priority claimed from US11/649,433 external-priority patent/US7768360B2/en
Application filed by Marvell World Trade Ltd, Sehat Sutardja filed Critical Marvell World Trade Ltd
Publication of WO2008048644A2 publication Critical patent/WO2008048644A2/en
Publication of WO2008048644A3 publication Critical patent/WO2008048644A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
    • 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
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation
    • 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
    • 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

  • Oscillators With Electromechanical Resonators (AREA)
  • Semiconductor Integrated Circuits (AREA)

Abstract

An integrated circuit comprises a microelectromechanical (MEMS) resonator circuit that generates a reference frequency. A temperature sensor senses a temperature of the integrated circuit. Memory stores calibration parameters and selects at least one of the calibration parameters as a function of the sensed temperature. A phase locked loop module receives the reference signal, comprises a feedback loop having a feedback loop parameter and selectively adjusts the feedback loop parameter based on the at least one of the calibration parameters.
PCT/US2007/022168 2006-10-17 2007-10-17 Crystal oscillator emulator WO2008048644A2 (en)

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
US82971006P 2006-10-17 2006-10-17
US60/829,710 2006-10-17
US86880706P 2006-12-06 2006-12-06
US60/868,807 2006-12-06
US86980706P 2006-12-13 2006-12-13
US60/869,807 2006-12-13
US11/649,433 2007-01-04
US11/649,433 US7768360B2 (en) 2002-10-15 2007-01-04 Crystal oscillator emulator
US11/732,465 US7760036B2 (en) 2002-10-15 2007-04-03 Crystal oscillator emulator
US11/732,465 2007-04-03
US11/732,409 US7768361B2 (en) 2002-10-15 2007-04-03 Crystal oscillator emulator
US11/732,418 US7786817B2 (en) 2002-10-15 2007-04-03 Crystal oscillator emulator
US11/732,409 2007-04-03
US11/732,418 2007-04-03

Publications (2)

Publication Number Publication Date
WO2008048644A2 WO2008048644A2 (en) 2008-04-24
WO2008048644A3 true WO2008048644A3 (en) 2008-09-25

Family

ID=39313013

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/022168 WO2008048644A2 (en) 2006-10-17 2007-10-17 Crystal oscillator emulator

Country Status (1)

Country Link
WO (1) WO2008048644A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8531245B2 (en) * 2011-10-28 2013-09-10 St-Ericsson Sa Temperature compensation in a PLL

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209843A1 (en) * 1992-03-26 1993-11-18 Telefunken Microelectron Temp. compensated oscillator circuit - stores tuning element setting signal and corresponding temp. signal during calibration phase for subsequent provision of correction signal
US5309090A (en) * 1990-09-06 1994-05-03 Lipp Robert J Apparatus for heating and controlling temperature in an integrated circuit chip
US5604468A (en) * 1996-04-22 1997-02-18 Motorola, Inc. Frequency synthesizer with temperature compensation and frequency multiplication and method of providing the same
EP0878909A1 (en) * 1997-04-25 1998-11-18 Matsushita Electric Industrial Co., Ltd. Apparatus and method for adjusting temperature compensated quarz oscillator
US20030025566A1 (en) * 2001-08-01 2003-02-06 Ar Card Automatic gain control for a voltage controlled oscillator
WO2003073629A1 (en) * 2002-02-22 2003-09-04 Global Locate, Inc. Method and apparatus for compensating an oscillator in a location-enabled wireless device
US6718816B2 (en) * 2001-08-13 2004-04-13 The United States Of America As Represented By The Secretary Of The Navy Monolithic I.C. implemented calibration circuit
US20040227578A1 (en) * 2003-05-14 2004-11-18 Miikka Hamalainen Acoustic resonance-based frequency synthesizer using at least one bulk acoustic wave (BAW) or thin film bulk acoustic wave (FBAR) device
US20050151592A1 (en) * 2004-01-09 2005-07-14 Aaron Partridge Frequency and/or phase compensated microelectromechanical oscillator
US20050218917A1 (en) * 2004-03-30 2005-10-06 Infineon Technologies Ag Semiconductor component with internal heating
US20060113639A1 (en) * 2002-10-15 2006-06-01 Sehat Sutardja Integrated circuit including silicon wafer with annealed glass paste

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5309090A (en) * 1990-09-06 1994-05-03 Lipp Robert J Apparatus for heating and controlling temperature in an integrated circuit chip
DE4209843A1 (en) * 1992-03-26 1993-11-18 Telefunken Microelectron Temp. compensated oscillator circuit - stores tuning element setting signal and corresponding temp. signal during calibration phase for subsequent provision of correction signal
US5604468A (en) * 1996-04-22 1997-02-18 Motorola, Inc. Frequency synthesizer with temperature compensation and frequency multiplication and method of providing the same
EP0878909A1 (en) * 1997-04-25 1998-11-18 Matsushita Electric Industrial Co., Ltd. Apparatus and method for adjusting temperature compensated quarz oscillator
US20030025566A1 (en) * 2001-08-01 2003-02-06 Ar Card Automatic gain control for a voltage controlled oscillator
US6718816B2 (en) * 2001-08-13 2004-04-13 The United States Of America As Represented By The Secretary Of The Navy Monolithic I.C. implemented calibration circuit
WO2003073629A1 (en) * 2002-02-22 2003-09-04 Global Locate, Inc. Method and apparatus for compensating an oscillator in a location-enabled wireless device
US20060113639A1 (en) * 2002-10-15 2006-06-01 Sehat Sutardja Integrated circuit including silicon wafer with annealed glass paste
US20040227578A1 (en) * 2003-05-14 2004-11-18 Miikka Hamalainen Acoustic resonance-based frequency synthesizer using at least one bulk acoustic wave (BAW) or thin film bulk acoustic wave (FBAR) device
US20050151592A1 (en) * 2004-01-09 2005-07-14 Aaron Partridge Frequency and/or phase compensated microelectromechanical oscillator
US20050218917A1 (en) * 2004-03-30 2005-10-06 Infineon Technologies Ag Semiconductor component with internal heating

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CLARK T-C NGUYEN ET AL: "Micromachined Devices for Wireless Communications", PROCEEDINGS OF THE IEEE, IEEE. NEW YORK, US, vol. 86, no. 8, August 1998 (1998-08-01), XP011044074, ISSN: 0018-9219 *
GADDI R ET AL: "Reconfigurable MEMS-enabled LC-tank for multi-band CMOS oscillator", MICROWAVE SYMPOSIUM DIGEST, 2005 IEEE MTT-S INTERNATIONAL LONG BEACH, CA, USA 12-17 JUNE 2005, PISCATAWAY, NJ, USA,IEEE, 12 June 2005 (2005-06-12), pages 1353 - 1356, XP010844881, ISBN: 978-0-7803-8846-8 *
MURJI R ET AL: "A low-power,10 ghz back-gated tuned voltage controlled oscillator with automatic amplitude and temperature compensation", CIRCUITS AND SYSTEMS, 2004. ISCAS '04. PROCEEDINGS OF THE 2004 INTERNA TIONAL SYMPOSIUM ON VANCOUVER, BC, CANADA 23-26 MAY 2004, PISCATAWAY, NJ, USA,IEEE, US, 23 May 2004 (2004-05-23), pages 421 - 424, XP010719824, ISBN: 978-0-7803-8251-0 *

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