The ACS758 50A Current Sensor Module (ACS758LCB-050B) is a high-precision Hall-effect based current sensing solution designed for accurate AC and DC current measurement in low to high voltage systems. This module is widely used with Arduino, Raspberry Pi, microcontrollers, industrial controllers, power monitoring systems, motor drivers, inverters, and battery management applications.

Built with a monolithic Hall IC and integrated shielding, the ACS758 offers excellent noise immunity, extremely low offset drift, and stable performance even in high dV/dt and high-side current sensing environments. With galvanic isolation and ultra-low internal conductor resistance, it ensures safe, efficient, and reliable current measurement. Available from BDTronics, a trusted electronics components supplier in Bangladesh.

Features:

• High-precision linear Hall-effect current sensing module

• Supports both AC and DC current measurement

• Measurement range up to ±50A

• Industry-leading low-noise performance using advanced amplifier and filter design

• Integrated electrostatic shield reduces capacitive coupling and offset drift

• Suitable for high-side and high-voltage current sensing

• Factory-trimmed gain and offset for improved temperature stability

• Ultra-low power loss with 100µΩ internal conductor resistance

• Galvanic isolation between current path and signal output

• Output voltage proportional to measured current

• Extremely stable zero-current offset voltage

• Nearly zero magnetic hysteresis

• Fast response time for dynamic current measurement

• Compact PCB with easy mounting capability

• Compatible with Arduino, Raspberry Pi, ESP32, STM32, PLC, and ADC systems

How to Use:

• Connect VDD pin to a 3.0V–5.5V power supply

• Connect GND to system ground

• Pass the measured current through the onboard conductor terminals

• Read the analog output voltage from the OUT pin using an ADC

• Zero-current output is VCC/2

• Calculate current using sensitivity value of 40mV per ampere

• Suitable for continuous monitoring and fast transient current detection

• Can be used in high-side current measurement safely due to isolation

Applications:

• Arduino and Raspberry Pi current monitoring

• Battery management systems (BMS)

• Motor control and motor driver current sensing

• Solar power and inverter systems

• Power supply and SMPS monitoring

• EV projects and charging systems

• Industrial automation and power electronics

• Overcurrent detection and protection circuits

• Robotics and embedded electronics projects

Specifications:

• Product Model: ACS758LCB-050B

• Supply Voltage (VDD): 3.0V – 5.5V

• Absolute Max VDD: -0.5V to 8.0V

• Measurement Range: ±50A

• Interface Type: Analog Output

• Sensitivity: 40mV/A

• Zero Current Output Voltage: VCC / 2

• Active Current Consumption: Typ 10mA, Max 13.5mA

• Internal Conductor Resistance: 100µΩ

• Bandwidth: 120kHz (typical)

• Output Rise Time: 3µs

• Propagation Delay: 1µs

• Noise: 10mV

• Magnetic Offset Error: 100mA

• Output Load Resistance: 4.7kΩ

• Output Load Capacitance: Max 10nF

• Isolation Voltage: 900V DC / 700Vrms

• Overcurrent Capability (1s): 1200A @25°C, 600A @150°C

• Package Thermal Resistance: 7°C/W

• Maximum Junction Temperature: 165°C

• Operating Temperature Range: -40°C to +150°C

• Board Size: 38.22mm × 18.03mm

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