The **CSLA2CF** is a linear current sensor part of the **Honeywell CSLA series**. It is based on Hall-effect technology and is designed to measure AC or DC currents without making physical contact with the conductor. --- ## 1. Technical Specifications The following table outlines the key electronic characteristics of the CSLA2CF: | Parameter | Specification | | :--- | :--- | | **Sensor Type** | Open Loop Hall-Effect | | **Current Range** | 125 A (Peak) | | **Supply Voltage (Vcc)** | 6 VDC to 12 VDC | | **Output Type** | Analog (Ratiometric) | | **Sensitivity** | 32.7 mV/N* (at 8V) | | **Response Time** | 3 $\mu$s | | **Operating Temperature** | -25°C to 85°C | --- ## 2. Key Internal Components The CSLA2CF consists of three primary electronic elements integrated into a single package: ### A. Hall-Effect IC The core "brain" of the sensor. When current flows through a wire passed through the sensor's center hole, it creates a magnetic field. The Hall-effect IC detects this field and converts it into a proportional voltage. ### B. Flux Collector (Toroid) There is a soft-iron magnetic core (concentrator) inside the plastic housing. This component gathers the magnetic flux from the conductor and focuses it onto the Hall-effect chip to ensure high sensitivity and accuracy. ### C. Output Circuitry The device features an analog amplifier that boosts the tiny Hall voltage into a usable signal. Because it is **ratiometric**, the quiescent output voltage (when no current is flowing) is typically exactly half of the supply voltage ($V_{cc} / 2$). --- ## 3. Terminal Connection Diagram The sensor typically features 3 pins for integration: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **V+** | Positive Supply (6-12V) | | 2 | **V-** | Ground (GND) | | 3 | **Vout** | Analog Output Signal | --- ## 4. Operational Advantages * **Galvanic Isolation:** Since the wire just passes through a hole, there is no electrical connection between the high-power circuit and your sensing circuit. * **Low Power Dissipation:** It does not require a shunt resistor, meaning there is no "voltage drop" or heat generated in the measured line. * **High Speed:** With a 3 $\mu$s response time, it is suitable for protecting sensitive electronics from over-current spikes.