AK09915C Datasheet, PDF (1/42 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK09915]
AK09915
3-axis Electronic Compass
1. General Description
AK09915 is 3-axis electronic compass IC with high sensitive Hall sensor technology.
Small package of AK09915 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.
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, Fast and High-speed modes (up to 2.5 MHz) compliant with Philips I²C
specification Ver.2.1
 4-wire SPI
 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 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:

-30˚C to +85˚C
 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: 0.9 mA (typ.)
 Low noise drive: 1.8 mA (typ.)
 Package:
 AK09915C 14-pin WL-CSP (BGA): 1.6 mm  1.6 mm  0.5 mm (typ.)
015006484-E-02
-1-
2016/7