Overview

AK8973 is a geomagnetism detection type electronic compass IC.
The small package of AK8973 integrates magnetic sensors for detecting geomagnetism in the X-axis, Y-axis,
and Z-axis, and arithmetic circuit for processing the signal from each sensor. AK8973 outputs four data in total as 8-bit digital values respectively: 3-axis magnetic sensor measured values and temperature sensor read value. By processing the magnetic sensor measured values withan external CPU, azimuth data can be obtained.

Features

3-axis electronic compass IC
Optimal built-in electronic compass for mobile phones and handy terminals
High sensitivity Hall sensors are integrated.
Functions
• Built-in 8-bit ADC
• Built-in amplifier for sensor signal amplification
• Built-in 8-bit DAC for sensor signal offset compensation
• Built-in EEPROM for storing individual adjustment values
• Built-in temperature sensor
• 8-bit digital output
• Serial interface: I2C bus interface (supporting the low-voltage specification)
• Automatic power-down function
• Interrupt function for measurement data ready
• Built-in master clock oscillator
Operating temperatures: -30°C to +85°C
Operating supply voltage: +2.5V to +3.6V
Low current consumption/measurement time:
• Power-down: 0.2μA typ.
• Magnetic sensor driving: 6.8mA/12.6ms
Package: 16-pin QFN package: 4.0mm×4.0mm×0.7mm