Coreless Current Sensor ICs
AK3101, AK3102, AK3103, AK3104, AK310H
AKM has developed ultra-low noise coreless sensors, the AK31 series, for large sized speakers such as subwoofers.
This is suitable for a system with voice coil current feedback with control of voice coil current, (Motion Feedback).
The AK31 series supports UL standards which works well with controlling industrial motors.
It is suitable for the application which requires insulation and detection of very small current.
Previously, current sensors had large sensor noise problems. The AK31 reduces the noise with signal processing using an ultra-high sensitivity compound Hall element and LSI.
It achieves the world’s best noise performance of -108dBm/√Hz.*
Dumping factor for the AK31 is almost unaffected since it is capable of current detection with a 1.6mΩ impedance.
It is suitable for current detection within speakers such as in a Motion Feedback system.
Small package, Supporting Safety Standard
The AK31 adopts an small coreless package（D/W/H:7.6mm×7.9mm×1.15mm).
It is certified according to IEC/UL60950, IEC/UL62368 and IEC/UL1577, suitable for various industrial applications such as AC motors and general inverters.
Certified with safety standards
|Product Name||Product Series|
|5.0||5.0||60||± 5.3 to ± 180
||Bipolar||≧ 8||800||CZ370x||CZ37 Series|
|0 to 345.2||Unipolar||CZ372x|
|3.0||50||± 11.6 to ± 166.6||Bipolar||CZ3AGx||CZ3A Series|
|3.3||3.3||± 12.9 to ± 129.1||CZ3A0x|
|5.0||5.0||40||± 33 to ± 60||≧ 7.2||715||CZ381x||CZ38 Series|
|5.0||5.0||20||± 4.5 to ± 42||Bipolar
|≧ 5||500||CQ330x||CQ3 Series|
|3.3||3.3||± 8.5 to ± 44||CQ320x|
|5.0||5.0||± 10.7 to ± 42||AK310x||AK31 Series|
* Pollution Degree II with reinforced insulation