AK09918 Datasheet, PDF (1/30 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK09918]
AK09918
3-axis Electronic Compass
1. General Description
AK09918 is 3-axis electronic compass IC with high sensitive Hall sensor technology.
Small package of AK09918 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:
 AK09918C 4-pin WL-CSP (BGA):
0.8 mm  0.8 mm  0.5mm
016014242-E-00
-1-
2016/11