ADAF1080BCPZ datasheet(2/36 Pages) AD

2 / 36 page

Data Sheet

ADAF1080

TABLE OF CONTENTS

analog.com

Rev. 0 | 2 of 36

Features................................................................ 1

Applications........................................................... 1

Product Highlights................................................. 1

Functional Block Diagram......................................1

General Description...............................................1

Specifications........................................................ 3

Magnetic Characteristics.................................... 3

Magnetic Range Characteristics........................ 3

General Characteristics......................................5

Optional Features Specifications........................7

Absolute Maximum Ratings.................................10

Thermal Resistance......................................... 10

Electrostatic Discharge (ESD) Ratings.............10

ESD Caution.....................................................10

Pin Configuration and Function Descriptions.......11

Typical Performance Characteristics................... 12

Terminology......................................................... 18

BSENSE .............................................................18

SDEVICE.............................................................18

SCOEFF1............................................................ 18

SCOEFF3............................................................ 18

SERROR............................................................. 18

SDEVICE_T..........................................................18

SERROR_TC ....................................................... 18

Full-Scale Range (FSR)................................... 18

LERROR..............................................................18

Cross Field (BCROSS)........................................18

Stray Field........................................................ 18

Output Error due to a Cross Field.................... 19

Theory of Operation.............................................20

AMR Magnetic Field Sensor.............................20

Sense Field Axis...............................................20

Operating Magnetic Field Range......................22

Integrated Signal-Chain Conditioning...............22

Precision Instrumentation Amplifier..................22

Flip Coil and Flip Coil Driver.............................23

Diagnostic Coil................................................. 23

Applications Information...................................... 25

Typical Application Diagram............................. 25

Ratiometric Output Configuration..................... 26

Amplifier Synchronization.................................26

Electrical Offset Cancellation........................... 27

Example Offset Calculation.............................. 27

Nonlinearity Compensation.............................. 28

Flip Coil and Measurement Timing...................28

Flipping Frequency...........................................28

Flip Coil Filter Configuration............................. 28

VSET Voltage.....................................................28

Output Anti-Alias Filter..................................... 29

Diagnostic Coil Driver.......................................30

Temperature Measurement.............................. 31

Design Examples............................................. 32

Circuit Board Layout Recommendations............. 34

Recommended PCB Layout.............................34

Mechanical Tolerances........................................ 35

Outline Dimensions............................................. 36

Ordering Guide.................................................36

Evaluation Boards............................................ 36

REVISION HISTORY

1/2023—Revision 0: Initial Version

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