20A ACS712 Current Sensor
20A ACS712 Current Sensor The 20A ACS712 Range Current Sensor Module ACS712 consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field in which the Hall IC converts into a proportional voltage. Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc. Connection Diagram of Arduino Uno with Current Sensor : Fig: Connection of ACS712 Current Sensor with Arduino UNO Curve of relation between the DC input voltage and measuring current: Fig: Output Voltage vs. Sensed Voltage
- Low-noise analog signal path
- 5 µs output rise time in response to step input current
- Small footprint, low-profile SOIC8 package
- 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
- Supply Voltage: 4.5V~5.5V DC
- Measure Current Range: 20A
- Sensitivity: 100 mV/A
- 1 x 20A ACS712 Current Sensor
- Hall Effect-Based Sensor: Utilizes the Hall effect for current measurement, providing electrical isolation.
- Analog Voltage Output: Produces an analog voltage proportional to the current passing through the sensor.
- High Accuracy: Offers precise current measurement with low offset and linear output.
- Wide Measurement Range: Can measure currents from -20A to +20A.
- Sensitivity: 100mV/A, meaning the output voltage changes by 100mV for every ampere of current.
- Supply Voltage: Operates at 5V.
- Compact Size: Dimensions are typically around 32x15mm