AKM AK09915D

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.

• 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
• 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
• Analog power supply +1.7V to +3.6V
• Digital Interface supply +1.65V to analog power supply voltage
• 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.)