TW200635235A - Frequency calibration for a monolithic clock generator and timing/frequency reference - Google Patents

Frequency calibration for a monolithic clock generator and timing/frequency reference

Info

Publication number
TW200635235A
TW200635235A TW094132744A TW94132744A TW200635235A TW 200635235 A TW200635235 A TW 200635235A TW 094132744 A TW094132744 A TW 094132744A TW 94132744 A TW94132744 A TW 94132744A TW 200635235 A TW200635235 A TW 200635235A
Authority
TW
Taiwan
Prior art keywords
frequency
reactance
oscillator
provides
output
Prior art date
Application number
TW094132744A
Other languages
Chinese (zh)
Other versions
TWI378648B (en
Inventor
Michael Shannon Mccorquodale
Scott Michael Pernia
Sundus Kubba
Amar Sarbbasesh Basu
Original Assignee
Mobius Microsystems Inc
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 US11/084,962 external-priority patent/US7227423B2/en
Priority claimed from US11/232,407 external-priority patent/US7456699B2/en
Application filed by Mobius Microsystems Inc filed Critical Mobius Microsystems Inc
Publication of TW200635235A publication Critical patent/TW200635235A/en
Application granted granted Critical
Publication of TWI378648B publication Critical patent/TWI378648B/en

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Electronic Switches (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

Exemplary embodiments of the invention provide a system, method and apparatus for frequency calibration of a free-running, harmonic oscillator. A reference oscillator provides a reference frequency. An exemplary system comprises the harmonic oscillator, a frequency divider, a comparator, and a reactance modulator. The oscillator comprises a plurality of switchable reactance modules and a coefficient register, and provides an oscillation signal having an oscillation frequency. The frequency divider provides an output frequency as a fraction of the oscillation frequency. The comparator compares the output and reference frequencies and provides a comparison signal when the output frequency is not substantially equal to the reference frequency. The reactance modulator determines and provides to the coefficient register a first plurality of coefficients to control switching of a first subset of the reactance modules to increase the reactance of the oscillator when the output frequency is greater than the reference frequency, and a second plurality of coefficients to control switching of a second subset of the reactance modules to decrease the reactance of the oscillator when the output frequency is less than the reference frequency.
TW94132744A 2005-03-21 2005-09-21 Frequency calibration system and apparatus and method for frequency calibration of an oscillator TWI378648B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/084,962 US7227423B2 (en) 2004-03-22 2005-03-21 Monolithic clock generator and timing/frequency reference
US11/085,372 US7227424B2 (en) 2004-03-22 2005-03-21 Transconductance and current modulation for resonant frequency control and selection
US11/232,407 US7456699B2 (en) 2004-03-22 2005-09-20 Frequency controller for a monolithic clock generator and timing/frequency reference

Publications (2)

Publication Number Publication Date
TW200635235A true TW200635235A (en) 2006-10-01
TWI378648B TWI378648B (en) 2012-12-01

Family

ID=48087852

Family Applications (5)

Application Number Title Priority Date Filing Date
TW94132743A TWI387208B (en) 2005-03-21 2005-09-21 Low-latency start-up for a monolithic clock generator and timing/frequency reference
TW94132744A TWI378648B (en) 2005-03-21 2005-09-21 Frequency calibration system and apparatus and method for frequency calibration of an oscillator
TW95109654A TWI426701B (en) 2005-03-21 2006-03-21 Inductor and capacitor-based clock generator and timing/frequency reference
TW95109663A TWI426710B (en) 2005-03-21 2006-03-21 Discrete clock generator and timing/frequency reference
TW95109658A TWI407682B (en) 2005-03-21 2006-03-21 Integrated clock generator and timing/frequency reference

Family Applications Before (1)

Application Number Title Priority Date Filing Date
TW94132743A TWI387208B (en) 2005-03-21 2005-09-21 Low-latency start-up for a monolithic clock generator and timing/frequency reference

Family Applications After (3)

Application Number Title Priority Date Filing Date
TW95109654A TWI426701B (en) 2005-03-21 2006-03-21 Inductor and capacitor-based clock generator and timing/frequency reference
TW95109663A TWI426710B (en) 2005-03-21 2006-03-21 Discrete clock generator and timing/frequency reference
TW95109658A TWI407682B (en) 2005-03-21 2006-03-21 Integrated clock generator and timing/frequency reference

Country Status (1)

Country Link
TW (5) TWI387208B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424179B (en) * 2006-12-29 2014-01-21 Teradyne Inc Method, automatic test equipment (ate), and non-transitort machine-readable media for use in identifying periodic jitter in a digital signal and method for use in testing a device
TWI638254B (en) * 2013-03-04 2018-10-11 美商微晶片科技公司 System and method for operating low power circuits at high temperatures
US10958203B2 (en) 2018-12-13 2021-03-23 Shanghai Awinic Technology Co., LTD Method for calibrating frequency of driving voltage waveform for linear resonance device and related device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100912093B1 (en) 2007-05-18 2009-08-13 삼성전자주식회사 PTAT current generation circuit having high temperature coefficient, display device and method thereof
TWI411907B (en) * 2009-02-04 2013-10-11 Holtek Semiconductor Inc System clock adjusting apparatus
TWI505642B (en) * 2012-12-21 2015-10-21 Nat Univ Chung Cheng All - digital Spread Spectrum Clock Generation Circuit with Electromagnetic Interference Effect Decay and Its Control Method
TWI548886B (en) * 2014-04-18 2016-09-11 創意電子股份有限公司 Aging detection circuit and method thereof
TWI619954B (en) * 2014-10-16 2018-04-01 Ｄｃｇ系統公司 Systems and method for laser voltage imaging
US10691156B2 (en) * 2017-08-31 2020-06-23 Texas Instruments Incorporated Complementary to absolute temperature (CTAT) voltage generator
US11025232B2 (en) * 2018-01-25 2021-06-01 CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement Electronic device
JP7306725B2 (en) * 2018-03-19 2023-07-11 ミシック，インコーポレイテッド Systems and methods for mixed-signal computing
US10659011B2 (en) 2018-10-22 2020-05-19 Delta Electronics Int'l (Singapore) Pte Ltd Low noise amplifier
TWI694675B (en) * 2019-04-19 2020-05-21 敦宏科技股份有限公司 Method for low-current oscillation circuit with wide operation voltage and temperature compensation
TWI766765B (en) * 2021-07-20 2022-06-01 大陸商星宸科技股份有限公司 Clock generator device and clock generation method

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528680A (en) * 1978-08-22 1980-02-29 Nec Corp Oscillation circuit
US4387350A (en) * 1980-12-24 1983-06-07 Rca Corporation Watch circuit with oscillator gain control
US4956618A (en) * 1989-04-07 1990-09-11 Vlsi Technology, Inc. Start-up circuit for low power MOS crystal oscillator
EP0630129A2 (en) * 1993-06-09 1994-12-21 Alcatel SEL Aktiengesellschaft Method for generating a synchronised clock signal with a circuit for an adjustable oscillator
US6014752A (en) * 1995-01-27 2000-01-11 Sun Mircosystems, Inc. Method and apparatus for fully controllable integrated circuit internal clock
US6233441B1 (en) * 1998-05-29 2001-05-15 Silicon Laboratories, Inc. Method and apparatus for generating a discretely variable capacitance for synthesizing high-frequency signals for wireless communications
TW475321B (en) * 1999-03-26 2002-02-01 Microtek Int Inc Method and apparatus for a decentralized and wireless communications system
US6654898B1 (en) * 1999-07-15 2003-11-25 Apple Computer, Inc. Stable clock generation internal to a functional integrated circuit chip
JP3495311B2 (en) * 2000-03-24 2004-02-09 Ｎｅｃエレクトロニクス株式会社 Clock control circuit
EP1189347A1 (en) * 2000-09-15 2002-03-20 Texas Instruments France Electronically trimmed VCO
US6665339B1 (en) * 2001-03-19 2003-12-16 Cisco Systems Wireless Networking (Australia) Pty. Limited Method and apparatus for reducing oscillator pull in a CMOS wireless transceiver integrated circuit
US6583675B2 (en) * 2001-03-20 2003-06-24 Broadcom Corporation Apparatus and method for phase lock loop gain control using unit current sources
DE10127423B4 (en) * 2001-06-06 2005-10-06 Infineon Technologies Ag Electronic circuit with power control
JP4831899B2 (en) * 2001-08-28 2011-12-07 富士通セミコンダクター株式会社 Semiconductor integrated circuit and clock control method
US6486727B1 (en) * 2001-10-11 2002-11-26 Pericom Semiconductor Corp. Low-power substrate bias generator disabled by comparators for supply over-voltage protection and bias target voltage
US7126405B2 (en) * 2002-12-02 2006-10-24 Scott Fairbanks Method and apparatus for a distributed clock generator
KR100498484B1 (en) * 2003-01-30 2005-07-01 삼성전자주식회사 Wide band voltage controlled oscillator with constant gain and method thereof
TWI261415B (en) * 2003-05-21 2006-09-01 Leadtek Research Inc Pulse interval to voltage converter and converting method thereof
JP4613483B2 (en) * 2003-09-04 2011-01-19 日本電気株式会社 Integrated circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424179B (en) * 2006-12-29 2014-01-21 Teradyne Inc Method, automatic test equipment (ate), and non-transitort machine-readable media for use in identifying periodic jitter in a digital signal and method for use in testing a device
TWI638254B (en) * 2013-03-04 2018-10-11 美商微晶片科技公司 System and method for operating low power circuits at high temperatures
US10958203B2 (en) 2018-12-13 2021-03-23 Shanghai Awinic Technology Co., LTD Method for calibrating frequency of driving voltage waveform for linear resonance device and related device
TWI726473B (en) * 2018-12-13 2021-05-01 大陸商上海艾為電子技術股份有限公司 A method, a system and a device for calibrating a frequency of a driving voltage waveform for a linear resonance device

Also Published As

Publication number Publication date
TW200705815A (en) 2007-02-01
TW200703875A (en) 2007-01-16
TWI378648B (en) 2012-12-01
TWI387208B (en) 2013-02-21
TW200703878A (en) 2007-01-16
TW200635234A (en) 2006-10-01
TWI426710B (en) 2014-02-11
TWI407682B (en) 2013-09-01
TWI426701B (en) 2014-02-11

Similar Documents

Publication Publication Date Title
TW200635235A (en) Frequency calibration for a monolithic clock generator and timing/frequency reference
US9680413B2 (en) Systems and methods of low power clocking for sleep mode radios
TW200607238A (en) Monolithic clock generator and timing/frequency reference
JP5556412B2 (en) Timing synchronization apparatus and timing synchronization method
ATE449483T1 (en) SYNCHRONIZATION SCHEME WITH ADAPTIVE REFERENCE FREQUENCY CORRECTION
AU2002223551A1 (en) Multi-mode radio communications device using a common reference oscillator
AU2003293648A1 (en) Multistatic method and device for radar measuring a close distance
TW200605512A (en) Circuit for applying jitter and test
WO2007038887A3 (en) Systems of parallel operating power electronic converters
EP1738476A4 (en) System for synchronizing a portable transceiver to a network
US10063245B2 (en) Reference signal generator
GB2353156A (en) Method and apparatus for varying a clock frequency on a phase by phase basis
WO2006130457A3 (en) Method and system for dynamically calculating values for tuning of voltage-controlled crystal oscillators
JP2014171014A (en) Mobile radio base station device, synchronization control method, and synchronization control program
US20060056490A1 (en) Spread spectrum clock generator and method of generating spread spectrum clock
DE60236966D1 (en) FREQUENCY MODULATOR USING A PHASE RULE LOOP
KR20140147179A (en) Circuit for adjusting clock phase and semiconductor device including the same
RU2554542C2 (en) Clocking circuit for wireless communication device
ATE357081T1 (en) FREQUENCY GENERATOR WITH MULTIPLE VOLTAGE-CONTROLLED OSCILLATORS
TW200725624A (en) Clock synchronization apparatus
WO2023076571A3 (en) Wireless device clock synchronization
TW200505166A (en) Phase locked loop system capable of deskewing and method therefor
US20040139364A1 (en) Clock circuit for a microprocessor
TW200700958A (en) Low frequency clock generation
TW200740098A (en) PWM inverter device