[AK09970]

Product brief

2017/1

- 1 -

1.

Genaral Description

AK09970 is a 3-axis magnetic sensor IC with high sensitivity and wide measurement range utilizing our

latest hall sensor technology.

Our ultra-small package of AK09970 incorporates magnetic sensors, chopper stabilized signal, amplifier

chain, and all necessary interface logic for detecting weak to strong magnetic fields in the X, Y and Z

planes independently. From its compact foot print, thin package, and extremely low power consumption,

it is suitable for a wide range of applications such as connected home, door & window opening/close

sensing, and magnetic tamper detection of IoT systems or smart meters just to name a few.

2.

Features

 Functions:



16 bit data out for each 3-axis magnetic component



Programmable threshold 3-axis magnetometer



Built-in A to D Converter for magnetometer data output



Selectable sensor measurement range and sensitivity setting

 High sensitivity setting



Sensitivity: 1.1 µT/LSB (typ.)



Measurement range: ± 36 mT

 Wide range setting



Sensitivity: 3.1 µT/LSB (typ.)



Measurement range: X and Y-axis

 ±34.9mT, Z-axis  ±101.5mT



Serial interface

 I2C bus interface

Standard and Fast mode compliant with Philips I2C specification Ver.2.1

 4-wire SPI



Operation mode

 Power-down, Single measurement, Continuous measurement



3-axis programmable switch function



Output pin for event notification

 INT pin and OD-INT pin



DRDY function for measurement data ready



Magnetic sensor overflow monitor function



Built-in oscillator for internal clock source



Selectable sensor drive

 Low power drive / Low noise drive

 Operating temperatures:



-4

0˚C to +85˚C

 Operating supply voltage:



+1.7V to +3.6V

 Current consumption (VDD = +1.8V):



Power-down:

2.0 nA (typ.)



Measurement:

 Average current consumption at 1 Hz/10Hz repetition rate



Low power drive: 0.6 µA(typ.)@1HzODR, 2.7 µA(typ.)@10HzODR



Low noise drive: 1.5 µA(typ.) @1HzODR, 11.9 µA(typ.)@10HzODR

 Package



AK09970N 16-pin QFN package: 3.0mm x 3.0mm x 0.75mm

3-axis Magnetic Sensor with Programmable Switch

AK09970

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