IEC 62047-19:2013

IEC 62047-19 ®
Edition 1.0 2013-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Semiconductor devices – Micro-electromechanical devices –
Part 19: Electronic compasses
Dispositifs à semiconducteurs – Dispositifs microélectromécaniques –
Partie 19: Compas électroniques

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IEC 62047-19 ®
Edition 1.0 2013-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Semiconductor devices – Micro-electromechanical devices –

Part 19: Electronic compasses
Dispositifs à semiconducteurs – Dispositifs microélectromécaniques –

Partie 19: Compas électroniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 31.080.99 ISBN 978-2-8322-0961-5

– 2 – 62047-19 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Essential ratings and characteristics . 7
4.1 Composition of e-compasses . 7
4.1.1 General . 7
4.1.2 Magnetic sensor section . 8
4.1.3 Acceleration sensor section . 8
4.1.4 Signal processing section . 8
4.1.5 Peripheral hardware section . 8
4.1.6 Peripheral software section . 8
4.1.7 DUT . 9
4.2 Ratings (Limiting values) . 9
4.3 Recommended operating conditions . 9
4.4 Electric characteristics . 9
4.4.1 General . 9
4.4.2 Characteristics of sensor sections . 9
4.4.3 DC characteristics . 10
5 Measuring methods . 11
5.1 Sensitivity of the magnetic sensor section . 11
5.1.1 Purpose . 11
5.1.2 Circuit diagram . 11
5.1.3 Principle of measurement . 11
5.1.4 Precaution to be observed . 12
5.1.5 Measurement procedure . 12
5.1.6 Specified conditions . 12
5.2 Linearity of the magnetic sensor section . 13
5.2.1 Purpose . 13
5.2.2 Measuring circuit . 13
5.2.3 Principle of measurement . 13
5.2.4 Precaution to be observed . 13
5.2.5 Measurement procedure . 14
5.2.6 Specified conditions . 14
5.3 Output of the magnetic sensor section in a zero magnetic field environment. 14
5.3.1 Purpose . 14
5.3.2 Measuring circuit . 14
5.3.3 Principle of measurement . 16
5.3.4 Precaution to be observed . 16
5.3.5 Measurement procedure . 16
5.3.6 Specified conditions . 16
5.4 Cross axis sensitivity of the magnetic sensor section . 16
5.4.1 Purpose . 16
5.4.2 Measuring circuit . 16
5.4.3 Measuring method 1 . 17
5.4.4 Measuring method 2 . 18
5.4.5 Specified conditions . 19

62047-19 © IEC:2013 – 3 –
5.5 Sensitivity and offset of the acceleration sensor section . 19
5.5.1 Purpose . 19
5.5.2 Measuring circuit . 20
5.5.3 Principle of measurement . 20
5.5.4 Precaution of measurement . 21
5.5.5 Measurement procedure . 21
5.5.6 Specified conditions . 21
5.6 Frequency bandwidth of the magnetic sensor section (analogue output) . 21
5.6.1 Purpose . 21
5.6.2 Measuring circuit . 21
5.6.3 Principle of measurement . 22
5.6.4 Measurement procedure . 23
5.6.5 Specified conditions . 23
5.7 Current consumption . 23
5.7.1 Purpose . 23
5.7.2 Measuring circuit . 23
5.7.3 Principle of measurement . 24
5.7.4 Precaution for measurement . 24
5.7.5 Measurement procedure . 24
5.7.6 Specified conditions . 24
Annex A (informative) Considerations on essential ratings and characteristics . 25
Annex B (informative) Terminal coordinate system of e-compasses . 26
Annex C (informative) Descriptions of the pitch angle, roll angle, and yaw angle with
drawings . 28
Bibliography . 30

Figure 1 – Composition of e-compasses . 8
Figure 2 – Circuit to measure sensitivity . 11
Figure 3 – Measuring method of linearity . 13
Figure 5 – Measuring circuit using a magnetic shield room or a magnetic shield box. 15
Figure 6 – Direction of DUT . 20
Figure 7 – Block diagram of frequency measurement . 22
Figure 8 – Current consumption measuring circuit . 24
Figure B.1 – Mobile terminal coordinate system of
...