AK09970N

MP

Tri-axis Magnetic Sensor IC with Digital Output

Tri-axis Magnetic Sensor IC with Digital Output

MP

Description

The AK09970N is a digital output 3D magnetic sensor that can select high resolution setting and wide measurement range setting.
The AK09970N has a high sensitivity setting of 36mT on tri-axis.  It is able to measure a wide range of magnetic field from microtesla to millitesla such as from geomagnetic to a magnet since it has high measurement resolution of 1.1μT/LSB in high sensitivity mode. In addition, wide range setting of 101mT can be achieved via the Z axis.

Key Features

  • Low-power Consumption when Battery Life is Critical
    The AK09970N can operate using only a few μA, thus consuming a very low current that satisfies a demand of IoT products, (Refer to the Specification Table). It contributes to a long battery life of a product that needs constant acquisition of sensor data to monitor an object’s status.
  • Magnetic Field Output (Digital)/ Data Ready Alert (DRDY bit)
    The AK09970N measures magnetic field on all tri-axis via intermittent drive and outputs the result as digital data, (supporting I²C / SPI communications).
    It outputs a Data Ready alert to the dedicated register when the measurement data is updated. (0.25 / 0.5 / 1 / 10 / 20 / 15 / 100Hz interval modes or single measurement mode is selectable for intermittent drive options.)
  • Magnetic Event Interrupt Function
    The AK09970N has magnetic event interrupt pins. Two thresholds can be programmed for each axis, (setting the resolution equal to the measuring resolution). When a magnetic field that exceeds the threshold is sent, the AK09970N outputs a “Magnetic Event” interrupt to registers or external output pins. The magnetic event that causes an interrupt output that can be selected freely by setting a register. (Data Ready alert mentioned in 3 can also be output from an interrupt pin). Two interrupt pins are available for magnetic event: the INT pin for push-pull output and the ODIN pin for open-drain output. Therefore, the output format can be selected depending on the customer’s product.

Applications

  •                                 IoT, Security Applications, (Door, Window open/close detection), Monitoring Applications for Factory Equipment, etc.
                                

Specifications

Part Number
AK09970N
Power Supply Voltage (MIN.) [V]
1.7
Power Supply Voltage (TYP.) [V]

                                
Power Supply Voltage (MAX.) [V]
3.6
Magnetic Sensitivity [μT/LSB]
1.1
Measurement range [mT]
X, Y, Z ±36
Measurement Time [ms]
0.23
Noise (Power Mode) [nT rms]

                                
Current Consumption (@100Hz ODR) [μA]
27
Current Consumption when measuring [mA]
1.5
Output pin
Interrupt pin (CMOS / Open Drain)
Control Interface
SPI / I²C
Other

                                
Operating Temperature [℃]
-40 to 85
Device Package
HWQFN
Number of Pins
16

Product Information

Part Status
MP
Pb Free
Yes
Halogen Free
Yes
MSL
MSL1
Packaging
TAPE
JEDEC Standard Packaging
Compliant
Minimum Order Quantity [pcs.]
4000
Replacement P/N

                                

Block Diagram

Block Diagram

Download

AK09970N Datasheet
English [017006194-E-00]
(45 Pages PDF: 845KB)

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