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Tri-axis Magnetic Sensors

The World's Smallest Class*
Tri-axis Magnetic Smart Switch for various purposes

New Product

AK09973D

Wide measurement range and high resolution, ideal for use in combination with magnet

AK09973D is ideal for non-contact detection of relative distances, postures and angles with magnets using in combination with a magnet. Utilizing the magnetic threshold interrupt function and ultra-low power consumption, it is also suitable for battery-powered security monitoring devices.

AK09973D is packaged in 5-pin WL-CSP with 0.4 [mm] ball-pitch . Size is 1.18 × 0.78 x 0.55 [mm] and 2 pins for power supply, 2 pins for I2C communication, one Interupt output pin.

[Notes] * According to AKM as of May 20, 2021.

Specifications Comparison

Tri-axis Magnetic Sensors
  Ultra-small
Tri-axis Magnetic Smart Switch
Ultra-small
Tri-axis Magnetic Smart Switch
Tri-axis Magnetic Smart Switch
Part Number AK09973D AK09970D AK09970N
Magnetic sensor technology Si Hall Si Hall Si Hall
Power supply (VDD) [V] 1.65 to 1.95 1.7 to 3.6 1.7 to 3.6
Magnetic sensitivity [μT/LSB] 1.1
(High sensitivity setting)
1.1 1.1
Measurement range [mT] X,Y,Z ±36 X,Y,Z ±36 X,Y,Z ±36
Measuremet time [ms] 0.265
(Low power drive)
0.23 0.23
Current consumption
@100Hz ODR
(Low power drive)
[μA] 22
(Low power drive)
27 27
Current consumption
when measuring
[mA] 1.4 1.5 1.5
Output pin   Interrupt pin
(Open Drain)
Interrupt pin
(Open Drain)
Interrupt pin
(CMOS / Open Drain)
Max. ODR [Hz]   2000 2000
Interface   I2C
(Two selectable Slave addresses)
I2C SPI / I2C
Package   5-pin WL-CSP 6-pin WL-CSP 16-pin QFN
Package Size [mm] 1.18 × 0.78 × 0.55 1.35 × 1.35  × 0.57 3.0 × 3.0 × 0.75
Status   NEW NRND NRND

Ultrahigh precision 3-axis Electronic Magnetometer

AK09940A

AK09940A is a digital output ultra-compact 3-axis electronic magnetometer that uses TMR magnetic sensor elements to achieve world-class ultra-low noise performance.
The magnetic field vector is output as an 18-bit digital value for each of the X, Y, and Z axes.
Metal flaw or metal foreign object detection, as well, it might be able to be utilized in various fields magnetic detection has not been made.

Specifications Comparison

Tri-axis Magnetic Sensors
  Ultrahigh precision
3-axis Electronic Magnetometer
Ultrahigh precision
3-axis Electronic Magnetometer
Part Number AK09940A AK09940
Magnetic sensor
technology
TMR
Power supply (VDD) [V] 1.7 to 1.98
Magnetic sensitivity [μT/LSB] 0.01
Measurement range [mT] X,Y,Z ±1.2
Measuremet time [ms] 0.6 / 0.9 / 1.5 / 2.8
Current consumption
@100Hz ODR
(Low power drive)
[μA] 30 / 60 / 100 / 200
Current consumption
when measuring
[mA] 0.8
Output pin   DRDY
Max. ODR [Hz] 400 or more 400
Interface   I²C / 4-wire SPI
Package   11-pin ULGA
Package Size [mm] 1.6 × 1.6 × 0.58
Status   ES, MP: 2022 EOL

Selection Table

Part Number
Part
Status
Power 
Supply 
Voltage 
(MIN.)
[V]
Power 
Supply 
Voltage 
(MAX.)
[V]
Magnetic 
Sensitivity
[μT/LSB]
Measurement 
range
[mT]
Measurement 
Time 
[ms]
Noise 
(Power Mode) 
[nT rms]
Current 
Consumption 
(@100Hz ODR)
[μA]
Current 
Consumption 
when 
measuring
[mA]
Output pin
Control 
Interface
Operating
Temperature
[℃]
Device
Package
Number
of Pins
AK09940
EOL
1.7
1.98
0.01
±1.2
0.6 / 0.9 / 1.5 / 2.8
70 / 60 / 50 / 40
30 / 60 / 100 / 200
0.8

                                
I²C / 4-wire SPI
-30 to 85
ULGA
11
AK09940A
Preview
1.7
1.98
0.01
±1.2
0.6 / 0.9 / 1.5 / 2.8
70 / 60 / 50 / 40
30 / 60 / 100 / 200
0.8
DRDY
I²C / 4-wire SPI
AK09970D
EOL
1.7
3.6
1.1
X, Y, Z ±36
0.23

                                
27
1.5
Interrupt pin (CMOS / Open Drain)
I²C
-40 to 85
WLCSP
6
AK09970N
EOL
1.7
3.6
1.1
X, Y, Z ±36
0.23

                                
27
1.5
Interrupt pin (CMOS / Open Drain)
SPI / I²C
-40 to 85
HWQFN
16
AK09973D
MP
1.65
1.95
1.1 (High sensitivity setting)
X, Y, Z ±36 (High sensitivity setting)
0.265 (Low power drive)

                                
22 (Low power drive)
1.4
Interrupt pin (Open Drain)
I²C  (Two selectable Slave addresses)
-30 to 85
WLCSP
5