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.

特性 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