ACS712 Current Sensing Module

  1. Datasheet
  2. Hall Effect Current Sensor Module for Arduino - 20A ACS712

ACS712 Moduole ACS712 Circuit Layout

The Allegro® ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. Source:




Hall Effect Current Sensor Module for Arduino - 20A ACS712

- Low-noise analog signal path
- Device bandwidth is set via the new FILTER pin
- 5 us output rise time in response to step input current
- 50 kHz bandwidth
- Total output error 1.5% at TA = 25°C, and 4% at -40°C to 85°C
- Small footprint, low-profile SOIC8 package
- 1.2 mOhm internal conductor resistance
- 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
- 5.0 V, single supply operation
- 66 to 185 mV/A output sensitivity
- Output voltage proportional to AC or DC currents
- Factory-trimmed for accuracy
- Extremely stable output offset voltage
- Nearly zero magnetic hysteresis
- Ratiometric output from supply voltage


Glenn Lyons VK4PK
Ver:gnl20190313 - pre published v0.9