Current Sensors

A current sensor is a device that detects and converts current to an easily measurable output voltage, which is proportional to the current through the measured path. There are a wide variety of sensors, and each sensor is suitable for a specific current range and environmental condition. Among these sensors, a current sensing resistor is the most commonly used. It can be considered a current-to-voltage converter, where inserting a resistor into the current path, the current is converted to voltage in a linear way. The technology used by the current sensor is important because different sensors can have different characteristics for a variety of applications.


Current sensors are based on either open or closed loop hall effect technology. A closed-loop sensor has a coil that is actively driven to produce a magnetic field that opposes the field produced by the current being sensed. The hall sensor is used as a null-detecting device, and the output signal is proportional to the current being driven into the coil, which is proportional to the current being measured.


In an open loop current sensor, the magnetic flux created by the primary current is concentrated in a magnetic circuit and measured using a hall device. The output from the hall device is the signal conditioned to provide an exact (instantaneous) representation of the primary current.


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ACS711KLCTR-12AB-T
ACS711KLCTR-12AB-T - Current Sensor, Overcurrent Fault, 4 mA, 100 kHz, SOIC, 8 Pins, 3 V, 5.5 V

2057423

Current Sensor, Overcurrent Fault, 4 mA, 100 kHz, SOIC, 8 Pins, 3 V, 5.5 V

ALLEGRO MICROSYSTEMS

CURRENT SENSOR, 12.5A, 3.3V, 8SOIC; Quiescent Current:4mA; Bandwidth:100kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperatu

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ACS758LCB-050B-PFF-T
ACS758LCB-050B-PFF-T - Current Sensor, Current Conductor, 10 mA, 120 kHz, PFF, 5 Pins, 3 V, 5.5 V

1791392

Current Sensor, Current Conductor, 10 mA, 120 kHz, PFF, 5 Pins, 3 V, 5.5 V

ALLEGRO MICROSYSTEMS

IC, CURRENT SENSOR, 50A, 3CB; Quiescent Current:10mA; Bandwidth:120kHz; Sensor Case Style:PFF; No. of Pins:5Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max

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    ACS712ELCTR-05B-T
    ACS712ELCTR-05B-T - Linear Current Sensor, Hall Effect, +/- 5A, SOIC-8

    1329623

    Linear Current Sensor, Hall Effect, +/- 5A, SOIC-8

    ALLEGRO MICROSYSTEMS

    IC, SENSOR, CURRENT, 5A, SOIC8; Quiescent Current:10mA; Bandwidth:80kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature

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    1329623RL in Re-reel

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    ACS712ELCTR-20A-T
    ACS712ELCTR-20A-T - Linear Current Sensor, Hall Effect, +/- 20A, SOIC-8

    1329624

    Linear Current Sensor, Hall Effect, +/- 20A, SOIC-8

    ALLEGRO MICROSYSTEMS

    SENSOR, CURRENT, 20A, SOIC8; Quiescent Current:10mA; Bandwidth:80kHz; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Ma

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    CSLW6B200M
    CSLW6B200M - Current Sensor, CSLW Series, Open Loop-200mA to 200mA, Sink, Source Output, 4.5 Vdc to 10.5 Vdc

    2396419

    Current Sensor, CSLW Series, Open Loop-200mA to 200mA, Sink, Source Output, 4.5 Vdc to 10.5 Vdc

    HONEYWELL

    CURRENT SENSOR, +/-0.2A, 4.5V-10.5V; Sensor Output:Sink / Source; Supply Voltage DC Min:4.5V; Supply Voltage DC Max:10.5VDC; Current Measuring Range DC:-200mA to 200mA; Current Measuring Range AC:-200mA to 200mA; Response Time:3µs; Accuracy %:-; Product

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