The part number **49AV2-2W1G-R** refers to a high-precision **Hall Effect Sensor**, typically manufactured by brands like Honeywell or specialized magnetic sensor producers. This specific component is a linear sensor used to detect magnetic field strength and convert it into an analog voltage. --- ### 1. Technical Specifications The following table outlines the key parameters typical for this series: | Parameter | Specification | | :--- | :--- | | **Sensor Type** | Linear Hall Effect | | **Supply Voltage (Vcc)** | 4.5V to 10.5V (Standard 5V) | | **Output Type** | Ratiometric Analog | | **Magnetic Range** | ±670 Gauss (Typical) | | **Sensitivity** | ~2.5 mV/G to 3.125 mV/G | | **Package Type** | TO-92 (3-pin) or SOT-style | | **Operating Temperature** | -40°C to 125°C | --- ### 2. Pin Configuration The device typically features three pins, which are essential for its operation in electronic circuits: 1. **VCC (Supply):** Connects to the positive power source (usually 5V DC). 2. **GND (Ground):** Connects to the common ground of the circuit. 3. **VOUT (Output):** Provides an analog voltage proportional to the magnetic field intensity. --- ### 3. Key Features and Behavior * **Ratiometric Output:** The output voltage is "ratiometric," meaning the quiescent output (voltage when no magnetic field is present) is exactly half of the supply voltage ($Vcc / 2$). * **Linearity:** It provides a highly linear response to magnetic fields, making it ideal for precision measurements. * **Low Power Consumption:** Designed for efficiency, drawing minimal current during operation. * **Ruggedness:** Built to withstand harsh environments, often used in automotive or industrial settings. --- ### 4. Common Applications Due to its ability to sense magnetic proximity and strength, it is used in: * **Current Sensing:** Measuring the magnetic field generated by a wire to determine the current flowing through it. * **Position Sensing:** Detecting the distance of a magnet in throttle controls or pedals. * **Motor Control:** Feedback for brushless DC motor commutation. * **Weight/Force Sensing:** Detecting small displacements in scales or pressure sensors. ---