BMP085 datasheet(4/27 Pages) BOSCH

4 / 27 page

BMP085

Data sheet

Bosch Sensortec

Rev. 1.2

Page 4

15 October 2009

as copying and passing on to third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Specifications are subject to change without notice.

TABLE OF CONTENTS

1 ELECTRICAL CHARACTERISTICS ..........................................................................................6

2 ABSOLUTE MAXIMUM RATINGS .............................................................................................7

3 OPERATION ................................................................................................................................8

3.1 GENERAL DESCRIPTION ....................................................................................................... 8

3.2 GENERAL FUNCTION AND APPLICATION SCHEMATICS ............................................................. 8

3.3 MEASUREMENT OF PRESSURE AND TEMPERATURE.............................................................. 10

3.4 CALIBRATION COEFFICIENTS .............................................................................................. 12

3.5 CALCULATING PRESSURE AND TEMPERATURE..................................................................... 12

3.6 CALCULATING ABSOLUTE ALTITUDE .................................................................................... 14

3.7 CALCULATING PRESSURE AT SEA LEVEL.............................................................................. 14

4 I

2C INTERFACE.........................................................................................................................15

4.1 I

2C SPECIFICATION ............................................................................................................ 15

4.2 DEVICE AND REGISTER ADDRESS ....................................................................................... 16

4.3 I

2C PROTOCOL .................................................................................................................. 16

4.4 START TEMPERATURE AND PRESSURE MEASUREMENT ........................................................ 17

4.5 READ A/D CONVERSION RESULT OR E

2PROM DATA............................................................ 18

5 PACKAGE .................................................................................................................................19

5.1 PIN CONFIGURATION.......................................................................................................... 19

5.2 OUTLINE DIMENSIONS........................................................................................................ 20

5.2.1 Top view (pads not visible)............................................................................................20

5.2.2 Top view with lid ............................................................................................................20

5.2.3 Side view with lid ...........................................................................................................21

5.3 DEVICE MARKING .............................................................................................................. 22

5.4 TAPE ON REEL .................................................................................................................. 22

5.5 PRINTED CIRCUIT BOARD (PCB) DESIGN............................................................................. 23

5.6 MOISTURE SENSITIVITY LEVEL AND SOLDERING ................................................................... 23

5.7 ROHS COMPLIANCY .......................................................................................................... 24

5.8 MOUNTING AND ASSEMBLY RECOMMENDATIONS ................................................................. 25

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