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三轴磁传感器
超小型封装 用于各种目的的三轴磁性智能开关
AK09974C和AK09973D是与磁铁配合使用的紧凑型封装三轴磁传感器。
仅需单颗传感器即可检测直线移动、旋转、开合、倾斜等基本动作，还能检测复合型运动轨迹。
AK09974C
AK09974C采用球间距为0.4mm的4引脚WL-CSP封装。尺寸为0.76 × 0.76 × 0.50mm，2个电源引脚和2个I²C / I3C通信端子配置。
凭借宽量程、低噪声设计与内置运算功能，在助力设备小型化的同时，又能兼顾高设计自由度与高精度。
一款适用于智能手机、XR终端、健康护理设备等各类电子产品UI (用户界面) 应用的3D磁传感器。
AK09973D
AK09973D采用了5引脚的WL-CSP封装，球间距为0.4mm。尺寸为1.18 × 0.78 × 0.55mm，其中2个引脚用于供电，2个引脚用于I²C通信，还有一个中断输出引脚。
利用磁阈值中断功能和低功耗特性，该产品也适用于电池驱动的安防监控设备。
Specifications Comparison
| Part Number | AK09974C | AK09973D | |
|---|---|---|---|
| Magnetic sensor technology | Si Hall | Si Hall | |
| Power supply (VDD) | [V] | 1.65 to 1.95 | 1.65 to 1.95 |
| I/O voltage (VIO) | [V] | 1.2 / 1.8 | 1.2 / 1.8 |
| Magnetic sensitivity |
[μT/LSB] | 1.1 (Normal range) 6.1 (Wide range) |
1.1 (High sensitivity) 3.1 (Wide range) |
| Measurement range |
[mT] | X,Y,Z: ±36 (Normal range) X,Y: ±78, Z: ±200 (Wide range) |
X,Y,Z: ±36 (High sensitivity) X,Y: ±34.9, Z: ±101.5 (Wide range) |
| Noise | [μTrms] | Normal range mode: X,Y: 3.1, Z: 1.4 (Super Low noise drive) X,Y: 5.3, Z: 2.4 (Low noise drive) X,Y: 14.8, Z: 6.8 (Normal drive) X,Y: 30.2, Z: 13.8 (Low power drive) |
High sensitivity mode: X,Y,Z: 5.5 (Low noise drive) X,Y,Z: 15 (Low power drive) |
| Current consumption (100Hz, Low noise drive) |
[μA] | 332 | 101 |
| Interrupt output | I3C In-Band Interrupt | Open-drain pin | |
| Max. ODR | [Hz] | 2000 | 2000 |
| Interface | I²C / I3C (v1.1.1) | I²C | |
| Package | 4-pin WLCSP | 5-pin WLCSP | |
| Package Size | [mm] | 0.76 × 0.76 × 0.50 | 1.18 × 0.78 × 0.55 |
| Internal calculation | Arctan | - | |
| Programmable threshold | Absolute, Relative | Absolute | |
| Status | Preview | MP | |
高精度三轴磁传感器
AK09940A
AK09940A是一款使用TMR磁性传感器元件达到超低噪声性能的超小型三轴电子磁强计，具有数字输出。对于X、Y和Z轴，磁场矢量都以18位数字值输出。
除了金属瑕疵或金属异物检测，它可能还可以用于许多尚未进行磁性检测的领域。
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] | ±1.2 | ||||||||
| Measuremet time | [ms] | 0.35 | 0.6 | 0.9 | 1.5 | 2.8 | 0.6 | 0.9 | 1.5 | 2.8 |
| Current consumption @100Hz ODR (Low power drive) |
[μA] | 16 | 30 | 60 | 100 | 200 | 30 | 60 | 100 | 200 |
| Noise | [nT-rms] | 120 | 70 | 60 | 50 | 40 | 70 | 60 | 50 | 40 |
| Current consumption when measuring |
[mA] | 0.8 | ||||||||
| Output pin | DRDY | |||||||||
| Max. ODR | [Hz] | 2500 | 400 | |||||||
| Interface | I²C / 4-wire SPI | |||||||||
| Package | 11-pin ULGA | |||||||||
| Package Size | [mm] | 1.6 × 1.6 × 0.58 | ||||||||
| Status | ES: Avialable MP: 2023/Q2 |
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 |
Max. ODR [Hz] |
Operating Temperature [℃] |
Device Package |
Number of Pins |
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AK09940A |
MP |
1.7 |
1.98 |
0.01 |
±1.2 |
0.35 / 0.6 / 0.9 / 1.5 / 2.8 |
120 / 70 / 60 / 50 / 40 |
16 / 30 / 60 / 100 / 200 |
0.8 |
DRDY |
I²C / 4-wire SPI |
2500 |
-30 to 85 |
ULGA |
11 |
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 |