ES2145042T3 - Compensacion de temperatura de una referencia de cristal usando sintesis digital directa. - Google Patents

Compensacion de temperatura de una referencia de cristal usando sintesis digital directa.

Info

Publication number
ES2145042T3
ES2145042T3 ES93903687T ES93903687T ES2145042T3 ES 2145042 T3 ES2145042 T3 ES 2145042T3 ES 93903687 T ES93903687 T ES 93903687T ES 93903687 T ES93903687 T ES 93903687T ES 2145042 T3 ES2145042 T3 ES 2145042T3
Authority
ES
Spain
Prior art keywords
phase
temperature
sinusoidal
increase
value
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 - Lifetime
Application number
ES93903687T
Other languages
English (en)
Inventor
Cesar W Carralero
Jaime A Borras
Armando J Gonzalez
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of ES2145042T3 publication Critical patent/ES2145042T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H03L7/16—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
    • H03L7/1806—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 the frequency divider comprising a phase accumulator generating the frequency divided signal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
    • G06F1/0328—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers in which the phase increment is adjustable, e.g. by using an adder-accumulator

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

CIERTAS CARACTERISTICAS OPERATIVAS DE UN CRISTAL (104) SE MIDEN DURANTE UN PROCESO DE VERIFICACION Y NIVELACION. UNA VEZ DETERMINADAS, LA INFORMACION REPRESENTATIVA DE ESTAS CARACTERISTICAS OPERATIVAS SE ALMACENA EN MEMORIA (120) Y SE UTILIZA POR UN CONTROLADOR (122) PARA AUMENTAR UN REGISTRO DE INCREMENTO DE FASE (114) PARA DETERMINAR LA TEMPERATURA AMBIENTE DE LOS CRISTALES POR MEDIO DE UN CIRCUITO DETECTOR DE TEMPERATURA (124). EL VALOR ALMACENADO EN EL REGISTRO DE INCREMENTO DE FASE (114) SE ENVIA ENTONCES A UN ACUMULADOR DE FASE (116) DONDE LOS SUCESIVOS INCREMENTOS DE FASE SE SUMAN JUNTOS. ESTE VALOR SUMADO SE ENVIA DE VUELTA A UNA TABLA DE CONSULTA SINUSOIDAL (118) DONDE EL VALOR DE FASE INSTANTANEO SE CONVIERTE EN UNA AMPLITUD SINUSOIDAL. FINALMENTE UN CONVERSOR DE DIGITAL A ANALOGICO (126) CONVIERTE LA CORRIENTE DE BITIOS DE AMPLITUD EN SEÑAL ANALOGICA PARA EMPLEARLA COMO UNA FRECUENCIA DE OSCILADOR DE REFERENCIA QUE TIENE UNA RESOLUCION DE FRECUENCIA EXTREMADAMENTE ELEVADA. EL PROCESO ARRIBA MENCIONADO SE REPITE CADA CICLO DE RELOJ HASTA QUE SE PRODUCE UNA ONDA SINUSOIDAL COMPLETA EN CUYO PUNTO EL ACUMULADOR DE FASE SE PONE A CERO Y EL PROCESO EMPIEZA DE NUEVO.
ES93903687T 1992-01-31 1993-01-27 Compensacion de temperatura de una referencia de cristal usando sintesis digital directa. Expired - Lifetime ES2145042T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/828,829 US5216389A (en) 1992-01-31 1992-01-31 Temperature compensation of a crystal reference using direct digital synthesis

Publications (1)

Publication Number Publication Date
ES2145042T3 true ES2145042T3 (es) 2000-07-01

Family

ID=25252848

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93903687T Expired - Lifetime ES2145042T3 (es) 1992-01-31 1993-01-27 Compensacion de temperatura de una referencia de cristal usando sintesis digital directa.

Country Status (7)

Country Link
US (1) US5216389A (es)
EP (1) EP0624288B1 (es)
CN (1) CN1027479C (es)
CA (1) CA2126872C (es)
DE (1) DE69328293T2 (es)
ES (1) ES2145042T3 (es)
WO (1) WO1993015555A1 (es)

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DE4201157C2 (de) * 1992-01-17 2001-07-12 Max Planck Gesellschaft PC-gesteuerter Direct-Digital-Synthesizer
DE4302542A1 (de) * 1993-01-29 1994-08-04 Siemens Ag Oszillatorschaltung mit einem die schwingquarzindividuellen Kenninformationen speichernden Speicher
FI96075C (fi) * 1993-05-14 1996-04-25 Nokia Telecommunications Oy Menetelmä radiolähettimen käynnistämiseksi ja radiolähetin
US5576666A (en) * 1993-11-12 1996-11-19 Nippondenso Technical Center Usa, Inc. Fractional-N frequency synthesizer with temperature compensation
FI98258C (fi) * 1994-06-07 1997-05-12 Nokia Telecommunications Oy Menetelmä vaihelukitun silmukan ohjaamiseksi ja vaihelukittu silmukka
FR2723275B1 (fr) * 1994-08-01 1996-10-25 Detaint Jacques Dispositif de generation de frequence(s)
FR2726705B1 (fr) * 1994-11-04 1996-12-20 Asulab Sa Generateur de frequence a haute stabilite
DE19601013A1 (de) * 1996-01-13 1997-07-17 Bosch Gmbh Robert Verfahren und Anordnung zur Frequenzmodulation eines hochfrequenten Signals
US5644271A (en) * 1996-03-05 1997-07-01 Mehta Tech, Inc. Temperature compensated clock
US5604468A (en) * 1996-04-22 1997-02-18 Motorola, Inc. Frequency synthesizer with temperature compensation and frequency multiplication and method of providing the same
JPH1056329A (ja) * 1996-08-12 1998-02-24 Matsushita Electric Ind Co Ltd 周波数制御発振器
US6249155B1 (en) * 1997-01-21 2001-06-19 The Connor Winfield Corporation Frequency correction circuit for a periodic source such as a crystal oscillator
EP0974196B1 (de) * 1997-04-07 2006-05-10 BenQ Mobile GmbH & Co. oHG Digitale afc-einstellung durch reziproke dds
US6006008A (en) * 1997-05-29 1999-12-21 Lexmark International, Inc. Motor drive system controlled by a phase accumulator and method therefor
WO2000011925A2 (de) * 1998-08-27 2000-03-09 Siemens Aktiengesellschaft Schaltung zur frequenzaufbereitung und modulation und funkstation
ES2145721B1 (es) * 1998-10-28 2001-03-01 Telefonica Sa Recuperador de reloj basado en sintesis digital directa para el metodo adaptativo.
US6396317B1 (en) 1999-05-28 2002-05-28 Peco Ii, Inc., Digital voltage controlled oscillator
US6542044B1 (en) * 2000-09-11 2003-04-01 Rockwell Collins, Inc. Integrated frequency source
DE10106941C2 (de) * 2001-02-15 2003-05-08 Texas Instruments Deutschland Phasen- und Frequenznachlaufsynchronisationsschaltungen
US7042301B2 (en) * 2002-10-15 2006-05-09 Marvell International Ltd. Crystal oscillator emulator
US7009905B2 (en) * 2003-12-23 2006-03-07 International Business Machines Corporation Method and apparatus to reduce bias temperature instability (BTI) effects
WO2006000611A1 (en) 2004-06-24 2006-01-05 Nokia Corporation Frequency synthesizer
CN100525109C (zh) * 2005-11-01 2009-08-05 中国科学院半导体研究所 一种频率噪声整形直接数字频率合成器
JP4713556B2 (ja) * 2006-09-11 2011-06-29 クゥアルコム・インコーポレイテッド Ｇｐｓ機器用の非常に精密で温度に依存しない基準周波数を生成するためのシステム及び方法
KR100895029B1 (ko) * 2007-01-17 2009-04-24 노키아 코포레이션 주파수 합성기
US20080212658A1 (en) * 2007-03-01 2008-09-04 Ahmadreza Rofougaran Method and system for communication of signals using a direct digital frequency synthesizer (ddfs)
JP4656103B2 (ja) * 2007-07-31 2011-03-23 パナソニック株式会社 発振器と、これを用いた受信装置及び電子機器
CN101272142B (zh) * 2008-05-20 2011-05-18 曹秀娟 频率合成器
US8242850B2 (en) * 2008-08-28 2012-08-14 Resonance Semiconductor Corporation Direct digital synthesizer for reference frequency generation
US7724097B2 (en) * 2008-08-28 2010-05-25 Resonance Semiconductor Corporation Direct digital synthesizer for reference frequency generation
FR2946488B1 (fr) * 2009-06-03 2012-05-04 St Ericsson Sa Correction de decalage de frequence
US20140119403A1 (en) * 2012-10-31 2014-05-01 Samsung Electro-Mechanics Co., Ltd. Apparatus and method for measuring temperature
US8884664B1 (en) * 2013-03-15 2014-11-11 Anritsu Company Systems and methods for generating low band frequency sine waves
CN103838157B (zh) * 2014-02-28 2016-08-31 嘉兴禾润电子科技有限公司 一种数字温度补偿电路及其补偿方法
CN109596967A (zh) * 2018-10-29 2019-04-09 上海华岭集成电路技术股份有限公司 一种高速adc信号减少噪声的采集方法

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CH626500B (de) * 1980-01-10 Suisse Horlogerie Oszillator mit digitaler temperaturkompensation.
US4454483A (en) * 1982-03-25 1984-06-12 Cubic Corporation Temperature compensation of an oscillator by fractional cycle synthesis
US4905177A (en) * 1988-01-19 1990-02-27 Qualcomm, Inc. High resolution phase to sine amplitude conversion
US4967165A (en) * 1989-02-14 1990-10-30 Motorola, Inc. Crystal reference for use in oscillator circuit
US4965533A (en) * 1989-08-31 1990-10-23 Qualcomm, Inc. Direct digital synthesizer driven phase lock loop frequency synthesizer
US5041799A (en) * 1990-11-05 1991-08-20 Motorola, Inc. Temperature compensation circuit for a crystal oscillator

Also Published As

Publication number Publication date
CN1076282A (zh) 1993-09-15
EP0624288A1 (en) 1994-11-17
CA2126872C (en) 1999-01-12
EP0624288B1 (en) 2000-04-05
DE69328293D1 (de) 2000-05-11
CN1027479C (zh) 1995-01-18
DE69328293T2 (de) 2000-11-30
WO1993015555A1 (en) 1993-08-05
US5216389A (en) 1993-06-01
CA2126872A1 (en) 1993-08-05
EP0624288A4 (en) 1994-09-19

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