Descriptions: ACS712 Current Sensor Module-20A

This current sensor board is based on the Allegro ACS712ELCTR-20A bi-directional hall-effect current sensor chip that detects positive and negative flowing currents in the range of minus 20 Amps to positive 20 Amps. The board operates at 5V DC and the current flow through the sensor is converted to an output voltage starting at 1/2Vcc (or 2.5V) for no current flow and moves up 66mV per amp for positive current or down -66mV per amp for negative current.

For example:

The output voltage at +2 amps would be (2.5V + (0.066 * 2)) = 2.632 VThe output voltage at -5 amps would be (2.5V – (0.066 * 5)) = 2.170

Features

• Basic Isolation Working Voltage = 420 Vpk/297 Vrms •
• Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
• Pin-selectable bandwidth: 80 kHz for high bandwidth applications or 20 kHz for low noise performance
• 0.65 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
• Small footprint, low-profile SOIC8 package suitable for space-constrained applications
• Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
• 4.5 to 5.5 V, single supply operation
• Output voltage proportional to AC or DC current
• Factory-trimmed sensitivity and quiescent output voltage

Specifications:

Diagram:

Documents:

ACS712_Current_Sensor_Datasheet_

Package Includes:

1 x ACS712 Current Sensor Module – 20A

• Pin-selectable bandwidth: 80 kHz for high bandwidth applications or 20 kHz for low noise performance
• Small footprint, low-profile SOIC8 package suitable for space-constrained applications
• 4.5 to 5.5 V, single supply operation
• Output voltage proportional to AC or DC current
• Factory-trimmed sensitivity and quiescent output voltage