Part: ACS712 Hall Current Sensor Module (Handson Technology)

Type: Hall Effect Current Sensor Module

Description: A highly accurate Hall Effect current sensor module operating from 5V, providing an analog voltage output proportional to AC or DC currents up to ±30 A, with 1.2 mΩ internal conductor resistance and 2.1 kVRMS isolation.

Operating Conditions:

• Supply voltage: 5.0Vdc Nominal
• Operating temperature: null
• Measurement Range: -5 to +5 Amps, -20 to +20 Amps, or -30 to +30 Amps (depending on module variant)

Absolute Maximum Ratings:

• Max supply voltage: null
• Max continuous current: 30 A (for 30A module variant)
• Max junction/storage temperature: null

Key Specs:

• Sensitivity: 66 mV/A (30A module), 100 mV/A (20A module), 185 mV/A (5A module)
• Operating Voltage: 5.0Vdc Nominal
• Voltage at 0A: VCC/2 (nominally 2.5Vdc)
• Internal conductor resistance: 1.2 mΩ
• Minimum isolation voltage: 2.1 kVRMS
• Total output error: 1.5% at TA = 25°C
• Measurement Range: -30 to +30 Amps (for 30A module variant)

Features:

• Output voltage proportional to AC or DC currents
• Factory-trimmed for accuracy
• Extremely stable output offset voltage
• Low-noise analog signal path
• Designed for use with microcontrollers (e.g., Arduino)

Applications:

• Current sensing in microcontroller-based systems (e.g., Arduino projects)

Package:

• Module (Mechanical dimensions provided)

ACS712ELC-10A Pinout

Package Type: Module with screw terminals and pin headers

Notes

• ACS712ELC-10A is the 10A variant with a scale factor of 100 mV/A
• IP+ and IP− are screw-terminal connectors for current measurement; current flows through the internal Hall-effect sensor between these terminals
• VOUT provides an analog voltage output with a nominal offset of VCC/2 (2.5V at 5V supply) with no current flowing
• VCC requires 5V nominal DC supply
• GND must be connected to the power source negative and to the microcontroller reference ground
• The module is designed for direct connection to microcontroller ADC inputs (e.g., Arduino A0–A5)
• Measurement range: −10A to +10A
• Output error: ±1.5% at TA = 25°C
• Internal conductor resistance: 1.2 mΩ
• Isolation voltage: 2.1 kVRMS minimum
• Do not use near significant magnetic fields (Hall-effect sensor)

Figure-4