IEC TS 61994-3:2004

Piezoelectric and dielectric devices for frequency control and selection - Glossary - Part 3: Piezoelectric and dielectric oscillators

Specifies the terms and definitions for piezoelectric and dielectric oscillators representing the present state-of-the-art, which are intended for use in the standards and documents of IEC technical committee 49.

General Information

• Status: Published
• Publication Date: 16-Mar-2004
• ICS: 01.040.31 - Electronics (Vocabularies)
• ICS: 31.140 - Piezoelectric devices
• Technical Committee: TC 49 - Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection
• Drafting Committee: WG 11 - TC 49/WG 11
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 26-Jul-2011

Relations

• Revised: IEC TS 61994-3:2011 - Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection - Glossary - Part 3: Piezoelectric and dielectric oscillators
• Effective Date: 05-Sep-2023

Standards Content (Sample)

TECHNICAL IEC
SPECIFICATION TS 61994-3
First edition
2004-03
Piezoelectric and dielectric devices
for frequency control and selection –
Glossary –
Part 3:
Piezoelectric and dielectric oscillators

Reference number
IEC/TS 61994-3:2004(E)
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

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base publication incorporating amendment 1 and the base publication incorporating

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TECHNICAL IEC
SPECIFICATION TS 61994-3
First edition
2004-03
Piezoelectric and dielectric devices
for frequency control and selection –
Glossary –
Part 3:
Piezoelectric and dielectric oscillators

 IEC 2004  Copyright - all rights reserved
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 writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale K

International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – TS 61994-3 © IEC:2004(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
PIEZOELECTRIC AND DIELECTRIC DEVICES

FOR FREQUENCY CONTROL AND SELECTION –

GLOSSARY –
Part 3: Piezoelectric and dielectric oscillators

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• The subject is still under technical development or where, for any other reason, there is
the future but no immediate possibility of an agreement on an International Standard.
IEC 61994-3, which is a technical specification, has been prepared by IEC technical
committee 49: Piezoelectric and dielectric devices for frequency control and selection.

TS 61994-3 © IEC:2004(E) – 3 –

The text of this technical specification is based on the following documents

Enquiry draft Report on voting

49/573/DTS 49/635/RVC
Full information on the voting for the approval of this technical specification can be found in

the report on voting indicated above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

IEC 61994 consists of the following parts under the general title Piezoelectric and dielectric
devices for frequency control and selection – Glossary:
Part 1: Piezoelectric and dielectric resonators;
Part 2: Piezoelectric and dielectric filters;
Part 3: Piezoelectric and dielectric oscillators;
Part 4-1: Piezoelectric and dielectric materials – Synthetic quartz crystal;
Part 4-2: Piezoelectric and dielectric materials – Piezoelectric ceramics;
.
Part 4-4: Piezoelectric and dielectric materials – Materials for SAW devices

The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• transformed into International Standard;
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
___________
Under consideration.
– 4 – TS 61994-3 © IEC:2004(E)

PIEZOELECTRIC AND DIELECTRIC DEVICES

FOR FREQUENCY CONTROL AND SELECTION –

GLOSSARY –
Part 3: Piezoelectric and dielectric oscillators

1 Scope
This part of IEC 61994 specifies the terms and definitions for piezoelectric oscillators
representing the state-of-the-art, which are intended for use in the standards and documents
of IEC TC 49.
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 references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60050(561):1991, International Electrotechnical Vocabulary (IEV) – Chapter 561:
Piezoelectric devices for frequency control and selection
IEC 60679-1:1997, Quartz crystal controlled oscillators of assessed quality – Part 1: Generic
specification
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
adjustment frequency
the frequency to which an oscillator must be adjusted, under a particular combination of
operating conditions, in order to meet the frequency tolerance specification over the specified
range of operating conditions, i.e. adjustment frequency = nominal frequency + frequency
offset
[IEV 561-04-09]
3.2
Allan variance of fractional frequency fluctuation
an unbiased estimate of the preferred definition in the time domain of the short-term stability
characteristic of the oscillator output frequency
[IEC 60679-1, definition 2.2.23]
3.3
amplitude distortion, amplitude modulation distortion, amplitude/frequency distortion
the non-linear distortion in which the relative magnitudes of the spectral components of the
modulating signal waveform are modified
[IEC 60679-1, definition 2.2.28]

TS 61994-3 © IEC:2004(E) – 5 –

3.4
crystal cut
the orientation of the used crystal element with respect to its crystallographic axes

[IEC 60679-1, definition 2.3]
3.5
fall time
the time interval for the trailing edge of a waveform to change between two defined levels.
These levels may be two logic levels V and V or 90 to 10 % of its maximum ampli
...