BS EN IEC 60444-6:2021

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Measurement of quartz crystal unit parameters – Measurement of drive level dependence (DLD)

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BSI	2021	26

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PDF Pages	PDF Title
2	undefined
5	Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7	English CONTENTS
8	FOREWORD
10	INTRODUCTION
11	1 Scope 2 Normative references 3 Terms and definitions 4 DLD effects 4.1 Reversible changes in frequency and resistance
12	4.2 Irreversible changes in frequency and resistance 4.3 Causes of DLD effects 5 Drive levels for DLD measurement
13	6 Test methods 6.1 Method A (fast standard measurement method) 6.1.1 Testing at two drive levels
14	6.1.2 Testing according to specification Figure 1 – Maximum tolerable resistance ratio for the drive level dependence as a function of the resistances or
15	6.2 Method B (Multi-level reference measurement method)
17	Annex A (normative) Relationship between electrical drive level and mechanical displacement of quartz crystal units
20	Annex B (normative) Method C: DLD measurement with oscillation circuit Figure B.1 – Insertion of a quartz crystal unit in an oscillator
21	Figure B.2 – Crystal unit loss resistance as a function of dissipated power
22	Figure B.3 – Behaviour of the of a quartz crystal unit Figure B.4 – Block diagram of circuit system
23	Figure B.5 – Installed in scanned drive level range Figure B.6 – Drive level behaviour of a quartz crystal unit if −Rosc = 70 Ω is used as test limit in the Annex B test
24	Figure B.7 – Principal schematic diagram of the go/no-go test circuit
25	Bibliography

Additional information

Status	Definitive
Pages	26
Publication Date	2021-11-05
ISBN	978 0 539 12134 6
Standard Number	BS EN IEC 60444-6:2021
Title	Measurement of quartz crystal unit parameters – Measurement of drive level dependence (DLD)
Identical National Standard Of	EN 60444-6 Ed.3.0, IEC 60444-6 Ed.3.0
Replaces	BS EN 60444-6:2013
Descriptors	Resonance, Current measurement, Power measurement (electric), Electrical testing, Electrical measurement, Mathematical calculations, Testing conditions, Crystal resonators, Circuits, Test equipment, Dielectric devices, Resistance measurement, Formulae (mathematics), Piezoelectric devices
Publisher	BSI
Committee	W/-
ICS Codes	31.140 - Piezoelectric devices

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BS EN IEC 60444-6:2021

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