Data Sheet

ManualsBrandsSparkfun Electronics ManualsInertia Measurement UnitsSparkFun ICM-20948 9DoF IMU Breakout (Qwiic)

ICM-20948

Document Number: DS-000189 Page 2 of 89

Revision: 1.3

TABLE OF CONTENTS

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

ORDERING INFORMATION ..................................................................................................................................................... 1

BLOCK DIAGRAM ................................................................................................................................................................. 1

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

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

TYPICAL OPERATING CIRCUIT ................................................................................................................................................. 1

1 GENERAL DESCRIPTION ........................................................................................................................................ 9

1.1 PURPOSE AND SCOPE ............................................................................................................................................... 9

1.2 PRODUCT OVERVIEW ............................................................................................................................................... 9

1.3 APPLICATIONS ......................................................................................................................................................... 9

2 FEATURES .......................................................................................................................................................... 10

2.1 GYROSCOPE FEATURES ........................................................................................................................................... 10

2.2 ACCELEROMETER FEATURES ..................................................................................................................................... 10

2.3 MAGNETOMETER FEATURES .................................................................................................................................... 10

2.4 DMP FEATURES .................................................................................................................................................... 10

2.5 ADDITIONAL FEATURES ........................................................................................................................................... 10

3 ELECTRICAL CHARACTERISTICS ........................................................................................................................... 11

3.1 GYROSCOPE SPECIFICATIONS .................................................................................................................................... 11

3.2 ACCELEROMETER SPECIFICATIONS ............................................................................................................................. 12

3.3 MAGNETOMETER SPECIFICATIONS ............................................................................................................................ 13

3.4 ELECTRICAL SPECIFICATIONS..................................................................................................................................... 13

D.C. Electrical Characteristics ................................................................................................................................... 13

A.C. Electrical Characteristics ................................................................................................................................... 14

Other Electrical Specifications .................................................................................................................................. 15

3.5 I

C TIMING CHARACTERIZATION ............................................................................................................................... 16

3.6 SPI TIMING CHARACTERIZATION ............................................................................................................................... 17

3.7 ABSOLUTE MAXIMUM RATINGS ............................................................................................................................... 18

4 APPLICATIONS INFORMATION ........................................................................................................................... 19

4.1 PIN OUT DIAGRAM AND SIGNAL DESCRIPTION ............................................................................................................ 19

4.2 TYPICAL OPERATING CIRCUIT ................................................................................................................................... 20

4.3 BILL OF MATERIALS FOR EXTERNAL COMPONENTS ....................................................................................................... 20

4.4 EXPOSED DIE PAD PRECAUTIONS .............................................................................................................................. 20

4.5 BLOCK DIAGRAM ................................................................................................................................................... 21

4.6 OVERVIEW ........................................................................................................................................................... 21

4.7 THREE-AXIS MEMS GYROSCOPE WITH 16-BIT ADCS AND SIGNAL CONDITIONING ............................................................ 22

4.8 THREE-AXIS MEMS ACCELEROMETER WITH 16-BIT ADCS AND SIGNAL CONDITIONING ...................................................... 22

4.9 THREE-AXIS MEMS MAGNETOMETER WITH 16-BIT ADCS AND SIGNAL CONDITIONING ..................................................... 22

4.10 DIGITAL MOTION PROCESSOR .................................................................................................................................. 22

4.11 PRIMARY I

C AND SPI SERIAL COMMUNICATIONS INTERFACES ....................................................................................... 22

ICM-20948 Solution Using I

C Interface.................................................................................................................... 22

ICM-20948 Solution Using SPI Interface ................................................................................................................... 23

4.12 AUXILIARY I

C SERIAL INTERFACE .............................................................................................................................. 24

4.13 SELF-TEST ............................................................................................................................................................ 24

4.14 CLOCKING ............................................................................................................................................................ 25

4.15 SENSOR DATA REGISTERS ........................................................................................................................................ 25