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

  • ️Sun Oct 01 2006
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
2005-03-21
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.)
2005-03-21
Filing date
2005-09-21
Publication date
2006-10-01
2005-03-21 Priority claimed from US11/084,962 external-priority patent/US7227423B2/en
2005-09-20 Priority claimed from US11/232,407 external-priority patent/US7456699B2/en
2005-09-21 Application filed by Mobius Microsystems Inc filed Critical Mobius Microsystems Inc
2006-10-01 Publication of TW200635235A publication Critical patent/TW200635235A/en
2012-12-01 Application granted granted Critical
2012-12-01 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
TW95109658A TWI407682B (en) 2005-03-21 2006-03-21 Integrated clock generator and timing/frequency reference
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

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
TW95109658A TWI407682B (en) 2005-03-21 2006-03-21 Integrated clock generator and timing/frequency reference
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

Country Status (1)

Country Link
TW (5) TWI387208B (en)

Cited By (3)

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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

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KR100912093B1 (en) 2007-05-18 2009-08-13 삼성전자주식회사 A temperature-proportional current generating circuit having a high temperature coefficient, a display device comprising the temperature-proportional current generating circuit and a 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
JP2016109673A (en) * 2014-10-16 2016-06-20 ディーシージー システムズ、 インコーポレイテッドＤｃｇ Ｓｙｓｔｅｍｓ Ｉｎｃ． 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
CN111837341B (en) * 2018-03-19 2024-07-05 神话公司 System and method for mixed signal computation
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 intelligent low-current oscillation circuit with wide operating 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

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

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