AK9970 Datasheet, PDF (1/5 Pages) Asahi Kasei Microsystems – 3-axis Magnetic Sensor with Programmable Switch

[AK09970]
= Product brief =
AK09970
3-axis Magnetic Sensor with Programmable Switch
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:

-40˚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
Product brief
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2017/1