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AKM |
[AK09916]
AK09916
3-axis Electronic Compass
1. General Description
AK09916 is 3-axis electronic compass IC with high sensitive Hall sensor technology.
Small package of AK09916 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 Smart phone to realize pedestrian navigation
function.
2. Features
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: 0.15 µT/LSB (typ.)
Serial interface
I2C bus interface
Standard and Fast modes compliant with Philips I2C specification Ver.2.1
Operation mode
Power-down, Single measurement, Continuous measurement and Self-test
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 magnetic sensitivity adjustment circuit
Operating temperatures:
-30˚C to +85˚C
Operating supply voltage:
+1.65V to +1.95V
Current consumption:
Power-down:
1 µA (typ.)
Measurement:
Average current consumption at 100 Hz repetition rate: 1.1mA (typ.)
Package:
AK09916C 5-pin WL-CSP (BGA):
1.2 mm 0.8 mm 0.5mm
015007392-E-02
-1-
2015/12
[AK09916]
3. Table of Contents
1. General Description .................................................................................................................. 1
2. Features ..................................................................................................................................... 1
3. Table of Contents ...................................................................................................................... 2
4. Block Diagram and Functions................................................................................................... 3
5. Pin Configurations and Functions ............................................................................................. 4
6. Absolute Maximum Ratings...................................................................................................... 4
7. Recommended Operating Conditions ....................................................................................... 4
8. Electrical Characteristics........................................................................................................... 5
8.1. DC Characteristics.............................................................................................................. 5
8.2. AC Characteristics.............................................................................................................. 6
8.3. Analog Circuit Characteristics............................................................................................ 6
8.4. I2C Bus Interface ................................................................................................................ 7
9. Function Descriptions ............................................................................................................... 8
9.1. Power States ....................................................................................................................... 8
9.2. Reset Functions .................................................................................................................. 8
9.3. Operation Modes ................................................................................................................ 9
9.4. Description of Each Operation Mode............................................................................... 10
9.4.1. Power-down Mode .................................................................................................... 10
9.4.2. Single Measurement Mode........................................................................................ 10
9.4.3. Continuous Measurement Mode 1, 2, 3 and 4 ........................................................... 11
9.4.4. Self-test Mode............................................................................................................ 14
10. Serial Interface ...................................................................................................................... 15
10.1. I2C Bus Interface ............................................................................................................ 15
10.1.1. Data Transfer ........................................................................................................... 15
10.1.2. WRITE Instruction .................................................................................................. 17
10.1.3. READ Instruction .................................................................................................... 18
11. Registers ................................................................................................................................ 19
11.1. Description of Registers ................................................................................................. 19
11.2. Register Map .................................................................................................................. 20
11.3. Detailed Description of Register .................................................................................... 21
11.3.1. WIA: Who I Am ...................................................................................................... 21
11.3.2. RSV: Reserved register............................................................................................ 21
11.3.3. ST1: Status 1............................................................................................................ 21
11.3.4. HXL to HZH: Measurement data ............................................................................ 22
11.3.5. TMPS: Dummy register........................................................................................... 22
11.3.6. ST2: Status 2............................................................................................................ 23
11.3.7. CNTL1: Dummy register......................................................................................... 23
11.3.8. CNTL2: Control 2.................................................................................................... 23
11.3.9. CNTL3: Control 3.................................................................................................... 24
11.3.10. TS1, TS2: Test register........................................................................................... 24
12. Example of Recommended External Connection ................................................................. 25
13. Package ................................................................................................................................. 26
13.1. Marking .......................................................................................................................... 26
13.2. Pin Assignment............................................................................................................... 26
13.3. Outline Dimensions........................................................................................................ 27
13.4. Recommended Foot Print Pattern................................................................................... 27
14. Relationship between the Magnetic Field and Output Code ................................................. 28
IMPORTANT NOTICE.............................................................................................................. 29
015007392-E-02
-2-
2015/12
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