1、 IEC 60444-11 Edition 1.0 2010-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Measurement of quartz crystal unit parameters Part 11: Standard method for the determination of the load resonance frequency f Land the effective load capacitance C Leffusing automatic network analyzer techniques and error
2、 correction Mesure des paramtres des rsonateurs quartz Partie 11: Mthode normalise pour la dtermination de la frquence de rsonance la charge f Let de la capacit de charge efficace C Leffutilisant des analyseurs automatiques de rseaux et correction des erreurs IEC 60444-11:2010 colour inside THIS PUB
3、LICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writin
4、g from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further inform
5、ation. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de la CEI ou du Comit nationa
6、l de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre pays de rsidence. IEC Central Office 3, rue de Varemb C
7、H-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications Th
8、e technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. Catalogue of IEC publications: www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variet
9、y of criteria (reference number, text, technical committee,). It also gives information on projects, withdrawn and replaced publications. IEC Just Published: www.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released
10、. Available on-line and also by email. Electropedia: www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International El
11、ectrotechnical Vocabulary online. Customer Service Centre: www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 A pro
12、pos de la CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications CEI Le contenu technique des publications
13、 de la CEI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm Le Catalogue en-ligne de la CEI vous permet deffectuer des recherches en utilisant
14、 diffrents critres (numro de rfrence, texte, comit dtudes,). Il donne aussi des informations sur les projets et les publications retires ou remplaces. Just Published CEI: www.iec.ch/online_news/justpub Restez inform sur les nouvelles publications de la CEI. Just Published dtaille deux fois par mois
15、les nouvelles publications parues. Disponible en-ligne et aussi par email. Electropedia: www.electropedia.org Le premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 20 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans
16、 les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International en ligne. Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou c
17、ontactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60444-11 Edition 1.0 2010-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Measurement of quartz crystal unit parameters Part 11: Standard method for the determination of the load resonance frequency f Land the effective l
18、oad capacitance C Leffusing automatic network analyzer techniques and error correction Mesure des paramtres des rsonateurs quartz Partie 11: Mthode normalise pour la dtermination de la frquence de rsonance la charge f Let de la capacit de charge efficace C Leffutilisant des analyseurs automatiques d
19、e rseaux et correction des erreurs INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE N ICS 31.140 PRICE CODE CODE PRIX ISBN 978-2-88912-210-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Intern
20、ationale colour inside 2 60444-11 IEC:2010 CONTENTS FOREWORD.3 1 Scope.5 2 Normative references .5 3 General concepts .6 3.1 Load resonance frequencies f Lrand f La .6 3.2 Effective load capacitance C Leff .6 4 Reference plane and test conditions.7 4.1 General .7 4.2 Principle of measurement7 4.3 Ev
21、aluation of errors .10 Bibliography14 Figure 1 Admittance of a quartz crystal unit .6 Figure 2 X Cas a function of frequency (solid line) in the vicinity of f L .9 Figure 3 Level of drive of a crystal in a -network vs. frequency 9 Figure 4 Error of the load resonance frequency due to the inaccuracy
22、of the measured voltages (dashed line) and the calibration resistances (soft line) 11 Figure 5 C L -error resulting from f L error (due to inaccuracy of the measured voltages and the calibration resistances) for the same crystal as in Figure 4.11 Figure 6 Frequency error due to noise of the measured
23、 voltages .12 Figure 7 Error of load resonance frequency f Lat 30 pF and 10 pF for typical equivalent parameters of quartz crystal units 12 Figure 8 Error of C Lefffor typical equivalent parameters of quartz crystal units 13 60444-11 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MEASUREMENT
24、 OF QUARTZ CRYSTAL UNIT PARAMETERS Part 11: Standard method for the determination of the load resonance frequency f Land the effective load capacitance C Leffusing automatic network analyzer techniques and error correction FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwid
25、e organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activ
26、ities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject
27、dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determ
28、ined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committ
29、ees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which t
30、hey are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication
31、 and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not re
32、sponsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical
33、committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publi
34、cations. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
35、patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60444-11 has been prepared by IEC technical committee 49: Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detec
36、tion. The text of this standard is based on the following documents: CDV Report on voting 49/852/CDV 49/883/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the
37、 ISO/IEC Directives, Part 2. 4 60444-11 IEC:2010 A list of all parts of the IEC 60444 series under the general title Measurement of quartz crystal unit parameters can be found on the IEC website. The committee has decided that the contents of this amendment and the base publication will remain uncha
38、nged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of th
39、is publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 60444-11 IEC:2010 5 MEASUREMENT OF QUARTZ CRYSTAL UNIT PARAMETERS Part 11: Standard method for the det
40、ermination of the load resonance frequency f Land the effective load capacitance C Leffusing automatic network analyzer techniques and error correction 1 Scope This part of IEC 60444 defines the standard method of measuring load resonance frequency f Lat the nominal value of C L , and the determinat
41、ion of the effective load capacitance C Leffat the nominal frequency for crystals with the figure of merit M 4. M, according to Table 1 of IEC 60122-1:2002, is expressed in the following equation: 1 0 1 R C r Q M = = (1) This gives good results in a frequency range up to 200 MHz. This method allows
42、the calculation of load resonance frequency offset f L , frequency pulling range f L1,L2and pulling sensitivity S as described in 2.2.31 of IEC 60122-1:2002. In contrary to the simple method of IEC 60444-4, this measurement technique avoids the use of physical load capacitors, and allows higher accu
43、racy, better reproducibility and correlation to the application. It extends the upper frequency limit from 30MHz by the method of IEC 60444-4 to 200MHz approximately. This method is based on the error-corrected measurement technique of IEC 60444-5:1995, and therefore allows the measurement of f L an
44、d C Lefftogether with the determination of the equivalent crystal parameters in one sequence without changing the test fixture. With this method the frequency f Lis searched where the reactance X Cof the crystal has the opposite value of the reactance of the load capacitance. L L CL C 1 C X X = = (2
45、) Furthermore this method allows to determine the effective load capacitance C Leffat the nominal frequency f nom . 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refe
46、rences, the latest edition of the referenced document (including any amendments) applies. IEC 60122-1:2002, Quartz crystal units of assessed quality Part 1: Generic specification IEC/TR 60444-4, Measurement of quartz crystal unit parameters by zero phase technique in a -network Part 4: Method for th
47、e measurement of the load resonance frequency f L , load resonance resistance R Land the calculation of other derived values of quartz crystal units, up to 30 MHz IEC 60444-5:1995, Measurement of quartz crystal units parameters Part 5: Methods for the determination of equivalent electrical parameter
48、s using automatic network analyzer techniques and error correction 6 60444-11 IEC:2010 3 General concepts 3.1 Load resonance frequencies f Lrand f LaAs can be seen in Figure 1, there are two intersection frequencies where CC L XX = , f Lrwith high admittance (low impedance) and f Lawith low admittan
49、ce (high impedance). The load resonant frequency f L is one of the two frequencies of a crystal unit in association with a series or with a parallel load capacitance, at which the electrical admittance (respectively impedance) of the combination is resistive. The load resonance frequency f Lis the lower of the two frequencies. In a first approximation f Lcan be calculated by