ACS712 Current Sensor Module-20A

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 techniquesPin-selectable bandwidth: 80 kHz for high bandwidth applications or 20 kHz for low noise performance0.65 mΩ primary conductor resistance for low power loss and high inrush current withstand capabilitySmall footprint, low-profile SOIC8 package suitable for space-constrained applicationsIntegrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients4.5 to 5.5 V, single supply operationOutput voltage proportional to AC or DC currentFactory-trimmed sensitivity and quiescent output voltage

Specifications:

VCC5V DC NominalMeasurement Range-20 to +20 AVoltage at 0AVCC/2 (Nominally 2.5V DC)Scale Factor66 mV per A

Length31.73 mm (1.24″)Width13.25 mm (0.52″)Height14 mm (0.55″)Weight2.72 g (0.096 oz)

Diagram:

Documents:

ACS712_Current_Sensor_Datasheet_

Package Includes:

1 x ACS712 Current Sensor Module – 20A