ACS712 - 20A Range Current Sensor Module
Description:
ACS712 - 20A Range Current Sensor Module is a precise, compact, and efficient current sensor based on Hall-effect technology, designed to measure both AC and DC currents up to ±20 Amperes (A). Manufactured by Allegro Microsystems, this module is widely used in electronics, power management systems, and automation applications for real-time current monitoring.Sensor module provides an analog voltage output directly proportional to the measured current, allowing easy interfacing with microcontrollers like Arduino, ESP32, Raspberry Pi, and other embedded platforms.
Features:
1. Measures both AC and DC currents
2. Linear analog voltage output (suitable for ADC reading)
3. High isolation from high-current circuit to low-voltage control circuit
4. Wide current sensing range: ±20A
5. Fast response time
6. Low-noise output signal
7. Compact and lightweight
8. Stable performance and long-term reliability
9. Simple 3-pin interface for easy microcontroller integration
Diagram:
Specifications:
| Current Measurement Range | -20A to +20A (AC & DC) |
| Sensitivity | 100 mV/A (for 20A version) |
| Output Voltage at 0A | Typically 2.5V |
| Operating Voltage | 5V DC |
| Output Type | Analog Voltage (Linear) |
| Isolation Voltage | Up to 2100V RMS |
| Bandwidth | 80 kHz |
| Operating Temperature | -40°C to +85°C |
| Dimensions | 31mm x 13mm x 13mm |
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