Description

AK8980-L is a 3-axis electronic compass IC with high sensitive Hall sensor technology. It incorporates small magnetic sensors for detecting terrestrial magnetism in the X-axis, Y-axis, and Z-axis, along with a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. It also has a self-test function. With its compact footprint and thin package, AK8980-L is suitable for map heading up purposes in GPS-equipped cell phones to realize pedestrian navigation functions.

Specifications and features

• 3-axis magnetometer device suitable for compass applications
• Built-in A to D Converter for magnetometer data out
• 14-/16-bit selectable data out for each 3 axis magnetic components
• Sensitivity:
  • 0.6 µT/LSB typ. (14-bit)
  • 0.15µT/LSB typ. (16-bit)
• Serial interface:
  • I2C bus interface. Standard mode and Fast mode compliant with Philips I2C specification Ver.2.1
  • 4-wire SPI
• Operation modes: Power-down, Single measurement, Continuous measurement, External trigger measurement, Self test and Fuse ROM access
• DRDY function for measurement data ready
• Magnetic sensor overflow monitor function
• Built-in oscillator for internal clock source
• Power on Reset circuit
• Operating temperature: -30°C to +85°C
• Analog power supply: +2.4V to +3.6V
• Digital Interface supply: +1.65V to analog power supply voltage
• Current consumption:
  • Power-down: 3 µA typ.
  • Measurement: Average power consumption at 8 Hz repetition rate: 280µA typ.
• Package:
  • AK8963C 14-pin WL-CSP (BGA): 1.6 mm × 1.6 mm × 0.5 mm (typ.)
  • AK8963N 16-pin QFN package: 3.0 mm × 3.0 mm × 0.75 mm (typ.)

Application Scenarios

AK8980-L is best adapted for pedestrian city navigation use in cell phones and other portable appliances.

Comparison

1. High sensitive Hall sensor technology

2. Small package with compact footprint and thin design

3. Suitable for map heading up purposes in GPS-equipped cell phones

4. Realizes pedestrian navigation functions

5. 3-axis magnetometer device

1. Limited temperature range: -30°C to +85°C

2. Limited power supply range: Analog power supply +2.4V to +3.6V, Digital Interface supply +1.65V to analog power supply voltage

3. Average power consumption at 8 Hz repetition rate is 280µA typ.

4. Small package sizes: AK8963C 14-pin WL-CSP (BGA): 1.6 mm × 1.6 mm × 0.5 mm (typ.), AK8963N 16-pin QFN package: 3.0 mm × 3.0 mm × 0.75 mm (typ.)