BSI 23/30472821 DC:2023 Edition
$13.70
BS EN IEC 60122-2. Quartz crystal units of assessed quality – Part 2. Guide to the use
Published By | Publication Date | Number of Pages |
BSI | 2023 | 37 |
PDF Catalog
PDF Pages | PDF Title |
---|---|
4 | CONTENTS |
6 | FOREWORD |
8 | 1 Scope 2 Normative references 3 Terms and definitions 4 The quartz crystal unit as an electronic component 4.1 General |
9 | 4.2 Modes of vibration |
10 | 4.3 The equivalent electrical circuit of a quartz crystal unit |
11 | 4.4 Crystal resistance |
13 | 4.5 Frequency versus temperature characteristics |
16 | 4.6 Q Factor |
17 | 4.7 level of drive and drive level dependency 4.7.1 level of drive 1.1.1.1 High level of drive 4.7.2 Low level of drive 4.7.3 drive level dependency |
18 | 4.8 Specifying frequency tolerance and operating temperature range |
19 | 4.9 Load capacitance and frequency pulling |
22 | 4.10 Unwanted responses |
24 | 4.11 Effects of ageing |
25 | Figure 11 –Typical aging curves |
26 | 4.12 Crystal unit enclosures 4.13 Start-up time |
27 | 4.14 Mechanical reliability 5 Application guide 5.1 Oscillator circuits and oscillation condition 5.1.1 Factors affecting the frequency 5.1.2 Types of oscillators |
28 | 5.1.3 Series resonance oscillators |
30 | 5.2 Oscillators, practical considerations 5.2.1 Crystal unit resistance 5.2.2 Unwanted responses |
31 | 5.2.3 Drive level 5.2.4 Frequency stability 5.3 Use in filter applications 6 Factors affecting cost and availability of quartz crystal units 6.1 Introduction |
32 | 6.2 Crystal unit frequency 6.3 Crystal unit enclosures 6.4 Frequency tolerances 6.5 AT-cut. Temperature coefficient cost aspects |
33 | 6.6 Ageing |
34 | 6.7 Environmental 6.8 General testing considerations 7 Technical data to accompany order form 7.1 Check list of crystal unit parameters to be specified in article sheet 7.2 Mandatory requirements |
35 | Table 3 – Checklist |
37 | Bibliography |