Lineup

Electronic Compass

The World's Smallest Class*

3-axis Electronic Compass for Mobile Devices with I3C bus interface compliance

AK09919C

The World's Smallest Class

I3C bus interface compliance with FIFO 16 steps

AK09919C is upward compatible with AKM's previous product AK09918C.
It incorporates I3C bus interface and FIFO 16 steps as new features while maintaining AK09918C footprint and pin compatibility.

AK09919C is packaged in 4-pin WL-CSP with 0.4 mm ball-pitch. Size is 0.76 mm × 0.76 mm × 0.5 mm and 2 pins for power supply, 2 pins for I3C/I2C communication.

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

The World's Smallest Class*

3-axis Electronic Compass for Mobile Devices

AK09918C

The World's Smallest Class

AK09918C realizes the smallest size 0.76 mm × 0.76 mm × 0.5 mm (63% size of the conventional product AK09916C) of our company while maintaining the high performance of the conventional product AK09916C.

It is housed in 0.4 mm pitch 4-pin WL-CSP package. (power supply 2 pins, 2 pins for I2C communication)

[Notes] * According to AKM as of January 1, 2017.

Specifications Comparison

Product Name AK09919C
3-axis electronic compass
AK09918C
3-axis electronic compass
AK09917D
3-axis electronic compass
AK09915C/D
3-axis electronic compass
  AK09919C AK09918C AK09917D AK09915D
Sensitivity [μT/LSB] 0.15 0.15 0.3* / 0.15 0.15
Output Data Resolution [bit] 16 16 16 16
Measurement Range [μT] ±4,900 ±4,900 ±4,900 ±4,900
Maximum ODR [Hz] 100 100 200* / 100 
200* / 100**
Current
Consumption
@10Hz ODR [mA]   0.1 0.1* / 0.15 0.1* / 0.19**
@100Hz ODR [mA] 1.1 1.1 0.6* / 1.1 0.9* / 1.8**
Power Supply
Voltage
Vdd [V] 1.65 to 1.95 1.65 to 1.95 1.65 to 1.95 1.7 to 3.6
Vid [V] N/A N/A N/A 1.65 to Vdd
Interface   I2C-bus / I3C-bus I2C-bus I2C-bus / I3C-bus I2C-bus / 4-wire SPI
FIFO [set of data] 16 - 32 32
Data ready pin DRDY:
CMOS output
  - - - Yes (AK09915C)
ODDRDY:
open-drain output
  - - Yes Yes (AK09915D)
Package Type   WL-CSP WL-CSP WL-CSP WL-CSP
Size [mm] 0.76 × 0.76 × 0.5 0.76 × 0.76 × 0.5 1.2 × 0.8 × 0.5 1.6 × 1.6 × 0.5
Number of pins   4 4 5 14
Notes       (*Low power drive) (*Low power drive)
(**Low noise drive)

Selection Table

Part Number
Part
Status
Sensitivity 
(TYP.)
[μT/LSB]
Analog Power 
Supply 
Voltage (MIN.)
[V]
Analog Power 
Supply 
Voltage (TYP.)
[V]
Analog Power 
Supply 
Voltage (MAX.)
[V]
Digital Interface 
Power Supply 
Voltage (MIN.) 
[V]
Current 
Consumption 
Power-down 
(TYP.)
[μA]
Current 
Consumption 
Measurement 
(TYP.)
[μA]
Control 
Interface
Operating
Temperature
[℃]
Device
Package
Number
of Pins
AK09915C
MP
0.15
1.7

                                
3.6
1.65 to VDD
3
900 @ 100Hz
I²C / 4 wire SPI
-30 to 85
WLCSP
14
AK09917D
MP
0.15 / 0.30
1.65

                                
1.95

                                
1
1100 / 600 @100Hz
I²C / I³C
-30 to 85
WLCSP
5
AK09918C
MP
0.15
1.65
1.8
1.95

                                

                                
1100@100Hz
I²C
-30 to 85
WLCSP
4
AK09919C
MP
0.15
1.65
1.8
1.95

                                
1
1100 @100Hz
I3C/I²C
-30 to 85
WLCSP
4