AS8501 - Preliminary Data Sheet

austriamicrosystems

Revision 1.1, 04-April-06

www.austriamicrosystems.com

Page 2 of 40

CONTENTS

1

FEATURES.........................................................................................................................................................................................1

2

APPLICATIONS .................................................................................................................................................................................1

3

GENERAL DESCRIPTION.................................................................................................................................................................1

4

PIN FUNCTION DESCRIPTION FOR SOIC 16 PACKAGE...............................................................................................................3

5

ABSOLUTE MAXIMUM RATINGS.....................................................................................................................................................4

6

ELECTRICAL CHARACTERISTICS..................................................................................................................................................5

7

FUNCTIONAL DESCRIPTION ...........................................................................................................................................................9

7.1

7.2

7.2.1

Reference voltage .............................................................................................................................................................10

7.2.2

Current sources.................................................................................................................................................................11

7.2.3

Internal temperature sensor ..............................................................................................................................................12

7.3

7.3.1

Sampling rate ....................................................................................................................................................................12

7.3.2

Calibration .........................................................................................................................................................................13

7.4

7.5

7.5.1

OPM operation mode register ( 4 bits ) .............................................................................................................................16

7.5.2

CRG general configuration register ( 28 bits )...................................................................................................................16

7.5.3

CRA measurement channel A configuration register ( 17 bits ) ......................................................................................17

7.5.4

CRB measurement channel B configuration register ( 17 bits ) .......................................................................................19

7.5.5

ZZR Zener-Zap register (188 bits )...................................................................................................................................20

7.5.6

CAR calibration register ( 110 bits ) .................................................................................................................................22

7.5.7

TRR trimming register ( 20 bits ) .......................................................................................................................................22

7.5.8

THR alarm (Wake-up) threshold register ( 17 bits ) .........................................................................................................25

7.5.9

MSR measurement result register ( 18 bits )....................................................................................................................25

8

DIGITAL INTERFACE DESCRIPTION.............................................................................................................................................25

8.1

CLK..............................................................................................................................................................................................25

8.2

INTN ............................................................................................................................................................................................25

8.3

8.4

8.5

8.6

8.6.1

ZZR register bit mapping...................................................................................................................................................29

8.6.2

Stored ZZR-register mapping............................................................................................................................................33

9

GENERAL APPLICATION HINTS ...................................................................................................................................................34

9.1

9.2

9.3

9.4

10

TYPICAL PERFORMANCE CHARACTERISTICS ..........................................................................................................................36

11

PACKAGE DIMENSIONS ................................................................................................................................................................38

12

REVISION HISTORY........................................................................................................................................................................38

13

ORDERING INFORMATION ............................................................................................................................................................38

14

CONTACT.........................................................................................................................................................................................39

14.1

14.2