AK09911C 3-Axis Hall Sensor Module I2C IIC

Product Description

AK09911 is 3-axis electronic compass IC with high sensitive Hall sensor technology.
Small package of AK09911 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 cell phone to realize pedestrian navigation function.

Features

AK09911 has the following features:
(1) Silicon monolithic Hall-effect magnetic sensor with magnetic concentrator realizes 3-axis magnetometer on a silicon chip. Analog circuit, digital logic, power block and interface block are also integrated on a chip.
(2) Wide dynamic measurement range and high resolution with lower current consumption.
 Output data resolution:14-bit (0.6 µT/LSB)
 Measurement range:±4900 µT
 Average current at 100 Hz repetition rate:2.4 mA (typ.)
(3) Digital serial interface: I2C bus interface to control AK09911 functions and to read out the measured data by external CPU. A dedicated power supply for I2C bus interface can work in low-voltage apply as low as 1.65V.
(4) DRDY register informs to system that measurement is end and set of data in registers are ready to be read.
(5) Device is worked by on-chip oscillator so no external clock source is necessary.
(6) Self test function with internal magnetic source to confirm magnetic sensor operation on end products.

• 3-axis electronic compass IC with high sensitive Hall sensor technology.
• Best adapted to pedestrian city navigation use for cell phone and other portable appliance.
• Functions:
  1,3-axis magnetometer device suitable for compass application
  2,Built-in A to D Converter for magnetometer data out
  3,14-bit data out for each 3-axis magnetic component, Sensitivity: 0.6 µT/LSB (typ.)
  4,Serial interface: I2C bus interface,Standard, Fast and High-speed mode (up to 2.5 MHz) compliant with Philips I2C specification Ver.2.1
  5,Operation mode:
  Power-down, Single measurement, Continuous measurement, Self-test and Fuse ROM access
  6,DRDY function for measurement data ready
  7,Magnetic sensor overflow monitor function
  8,Built-in oscillator for internal clock source
  9,Power on Reset circuit
  10,Self test function with internal magnetic source
  Operating temperatures:-30˚C to +85˚C
  Operating supply voltage:+2.4V to +3.6V(Analog power supply),+1.65V to analog power supply voltage(Digital Interface supply)
  Current consumption: 3 µA (typ.)(Power-down), Average current consumption at 100 Hz repetition rate: 2.4 mA (typ.)(Measurement)