Hall Current Sensor - AH910W

AH910W is a high-performance Hall-effect isolated linear current sensor chip that can effectively measure AC or DC current. It is widely used for AC or DC current detection in industrial, commercial, and communication systems.

The AH910W series integrates a high-precision, low-noise linear Hall circuit and a low-impedance primary current path. When the sampled current flows through the primary current path, the generated magnetic field induces a corresponding electrical signal in the Hall circuit, which is then processed by the signal processing circuit to output a voltage signal, making the output strictly proportional to the measured current value.

The linear Hall circuit is based on BCD technology with low offset and chopper stabilization, providing precise ratiometric voltage that is accurately calibrated during manufacturing. When the applied current flows through the internal current conduction path (from pins 1, 2, 3, and 4 to pins 5, 6, 7, and 8), the chip output has a positive slope (>VOQ). The internal resistance of this conduction path is typically 0.75mΩ, enabling low power consumption. The terminals of the conduction path (pins 1 to 8) are electrically isolated from the signal pins (pins 9 to 16). This allows the AH910W current sensor IC to be used in high-side current sensing applications without the need for other expensive isolation technologies. This series is offered in a SOP16W package that is RoHS compliant.

I.Hall Current Sensor -Features of AH910W:

Operating Voltage: 4.5V ~ 5.5V
Static Common-Mode Output Point: 2.5V or 50% VCC
Wide Measurement Range: ±30A, ±40A, ±50A, ±60A, ±70A, ±80A, 60A, 70A, 80A
High Bandwidth: 120kHz
Output Response Time: 4μs (typical)
Built-in Reference Output: 2.5V
Safety Certifications: UL Ready
- Dielectric Strength: 4800Vrms 1min
- Isolation Working Voltage: 1097Vrms, 1550VDC or VPK
- Clearance: 7.5mm
- Creepage Distance: 8.2mm
RoHS Compliant: (EU) 2015/863

II.Hall Current Sensor -Applications of AH910W:

Current detection in low and medium power variable frequency drives

Motor phase and rail current detection

Current detection in string PV inverters, MPPT current detection

Chargers, converters

DC power supplies

Overcurrent protection

Uninterruptible power supplies (UPS)