AKM AK09918C

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.

• 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 ℃ to +85 ℃
• Operating supply voltage: +1.65 V to +1.95 V
• Current consumption: Power-down: 1 μA (typ.)
• Measurement: Average current consumption at 100 Hz repetition rate: 1.1 mA (typ.)