AK09915D

AK09915D Datasheet

[AK09915D]

Part	Datasheet
AK09915D	AK09915D (pdf)

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[AK09915D] AK09915D 3-axis Electronic Compass AK09915D is 3-axis electronic compass IC with high sensitive Hall sensor technology. Small package of AK09915D incorporates magnetic sensors for detecting terrestrial magnetism in the X-axis, Y-axis, and Z-axis, a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. Self-test function is also incorporated. From its compact foot print and thin package feature, it is suitable for map heading up purpose in GPS-equipped smart phone and tablet to realize pedestrian navigation function. Functions  3-axis magnetometer device suitable for compass application  Built-in A to D Converter for magnetometer data out  16-bit data out for each 3-axis magnetic component  Sensitivity µT/LSB typ.  Serial interface  I2C bus interface Standard, Fast and High-speed modes up to MHz compliant with Philips I2C specification Ver.2.1  4-wire SPI  Operation mode  Power-down, Single measurement, Continuous measurement and Self-test  Open Drain DRDY function for measurement data ready  Magnetic sensor overflow monitor function  Built-in oscillator for internal clock source  Power on Reset circuit  Self-test function with internal magnetic source  Built-in Noise Suppression Filter NSF  Selectable sensor drive  Low power drive / Low noise drive  Built-in magnetic sensitivity adjustment circuit  32 FIFO data buffer Operating temperatures: Operating supply voltage:  Analog power supply +1.7V to +3.6V  Digital Interface supply +1.65V to analog power supply voltage Current consumption:  Power-down: 3 µA typ.  Measurement:  Average current consumption at 100 Hz repetition rate Low power drive mA typ. Low noise drive mA typ. Package:  AK09915D 14-pin WL-CSP BGA mm typ. 016009278-E-00 -1- 2016/7 [AK09915D] Table of Contents General Description Features Table of Contents Block Diagram and Pin Configurations and Absolute Maximum Recommended Operating Conditions Electrical Characteristics DC Characteristics AC Characteristics ODDRDY AC Characteristics Analog Circuit Characteristics 4-wire I2C Bus Interface Functional Descriptions Power States Reset Functions Operation Description of Each Operation Mode Power-down Mode Single Measurement Mode Continuous Measurement Mode 1, 2, 3, 4, 5 and Self-test Mode Noise Suppression Filter NSF Sensor Drive Select FIFO Watermark Serial Interface 4-wire Writing Data Reading Data I2C Bus Interface Data Transfer WRITE Instruction READ Instruction High-speed Mode Hs-mode Description of Register Map Detailed Description of Registers WIA Who I Am RSV Reserved INFO ST1 Status 1 HXL to HZH Measurement magnetic data TMPS ST2 Status 2 CNTL1 Control 1 CNTL2 Control 2 CNTL3 Control 3 TS1, TS2, TS3 Test 016009278-E-00 -2- 2016/7 [AK09915D] I2CDIS I2C Disable TS4 Test ASAX,ASAY,ASAZ Dummy TPH1,TPH2,RR,SYT,DT Example of Recommended External Connection I2C Bus Interface 4-wire Package Marking Pin Assignment Outline Recommended Foot Print Pattern Relationship between the Magnetic Field and Output Code IMPORTANT NOTICE 016009278-E-00 -3- 2016/7 Block Diagram and Functions [AK09915D] 3-axis Hall sensor Chopper SW PreAMP Magnetic source HE-Drive VREF CAD0 CAD1

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[AK09915D]

AK09915D
3-axis Electronic Compass

AK09915D is 3-axis electronic compass IC with high sensitive Hall sensor technology. Small package of AK09915D incorporates magnetic sensors for detecting terrestrial magnetism in the X-axis, Y-axis, and Z-axis, a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. Self-test function is also incorporated. From its compact foot print and thin package feature, it is suitable for map heading up purpose in GPS-equipped smart phone and tablet to realize pedestrian navigation function.

Functions  3-axis magnetometer device suitable for compass application  Built-in A to D Converter for magnetometer data out  16-bit data out for each 3-axis magnetic component  Sensitivity µT/LSB typ.  Serial interface  I2C bus interface Standard, Fast and High-speed modes up to MHz compliant with Philips I2C
specification Ver.2.1  4-wire SPI  Operation mode  Power-down, Single measurement, Continuous measurement and Self-test  Open Drain DRDY function for measurement data ready  Magnetic sensor overflow monitor function  Built-in oscillator for internal clock source  Power on Reset circuit  Self-test function with internal magnetic source  Built-in Noise Suppression Filter NSF  Selectable sensor drive
 Low power drive / Low noise drive  Built-in magnetic sensitivity adjustment circuit  32 FIFO data buffer

Operating temperatures:

Operating supply voltage:
 Analog power supply +1.7V to +3.6V
 Digital Interface supply +1.65V to analog power supply voltage

Current consumption:
 Power-down:
3 µA typ.
 Measurement:
 Average current consumption at 100 Hz repetition rate

Low power drive mA typ.

Low noise drive mA typ.

Package:
 AK09915D 14-pin WL-CSP BGA mm typ.
016009278-E-00 -1-
2016/7
[AK09915D]

Table of Contents

General Description Features Table of Contents Block Diagram and Pin Configurations and Absolute Maximum Recommended Operating Conditions Electrical Characteristics

DC Characteristics AC Characteristics ODDRDY AC Characteristics Analog Circuit Characteristics 4-wire I2C Bus Interface Functional Descriptions Power States Reset Functions Operation Description of Each Operation Mode

Power-down Mode Single Measurement Mode Continuous Measurement Mode 1, 2, 3, 4, 5 and Self-test Mode Noise Suppression Filter NSF Sensor Drive Select FIFO Watermark Serial Interface 4-wire Writing Data Reading Data I2C Bus Interface Data Transfer WRITE Instruction READ Instruction High-speed Mode Hs-mode Description of Register Map Detailed Description of Registers WIA Who I Am RSV Reserved INFO ST1 Status 1 HXL to HZH Measurement magnetic data TMPS ST2 Status 2 CNTL1 Control 1 CNTL2 Control 2 CNTL3 Control 3 TS1, TS2, TS3 Test
016009278-E-00 -2-
2016/7
[AK09915D]

I2CDIS I2C Disable TS4 Test ASAX,ASAY,ASAZ Dummy TPH1,TPH2,RR,SYT,DT Example of Recommended External Connection I2C Bus Interface 4-wire Package Marking Pin Assignment Outline Recommended Foot Print Pattern Relationship between the Magnetic Field and Output Code IMPORTANT NOTICE
016009278-E-00 -3-
2016/7

Block Diagram and Functions
[AK09915D]
3-axis Hall sensor

Chopper SW

PreAMP

Magnetic source

HE-Drive VREF

CAD0 CAD1

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Datasheet ID: AK09915D 515859