AS8501 - 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