Description

The AK8910A is a 3-axis electronic compass IC with high sensitive Hall sensor technology. It is designed with a small package that incorporates magnetic sensors for detecting terrestrial magnetism in the X-axis, Y-axis, and Z-axis. This IC also includes a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. Additionally, it features a self-test function and can be used for map heading up purposes in GPS-equipped cell phones to realize pedestrian navigation functions.

Specifications and features

• A 3-axis electronic compass IC with high sensitive Hall sensor technology.
• Best adapted to pedestrian city navigation use for cell phones and other portable appliances.
• 3-axis magnetometer device suitable for compass application.
• 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, 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.
• Self test function with built-in internal magnetic source.
• Operating temperatures: -30°C to +85°C.
• Operating supply voltage: 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.
• Packages: 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

The AK8910A is best suited for use in cell phones and other portable appliances that require pedestrian city navigation functions. Its compact size and high sensitivity make it ideal for map heading up purposes, enabling accurate and reliable pedestrian navigation.

Comparison

• High sensitive Hall sensor technology for accurate compass functionality.
• Small package size suitable for compact devices such as cell phones.
• Multiple operation modes for flexible usage scenarios.
• Self test function for easy calibration and testing.
• Built-in magnetic sensor overflow monitor function.
• Wide operating temperature range for various environmental conditions.

• Requires external power supply for operation.
• Limited to compass applications.