ACS725LLCTR-40AB-T

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1. Describe

Allegro™ ACS725LLCTR-40AB-T current sensor IC is an economical and Accurate solutions for AC or DC current detection in industry, Automotive, business and communication systems. This Small package is ideal for space-constrained applications At the same time, the cost is saved due to the reduction of the circuit board area. typical Applications include motor control, load detection and Management, switch mode power supply and overcurrent Fault protection. The device consists of an accurate, low-offset linear Hall The sensor circuit with copper conductive path is located close to Mold surface. The impressed current flowing through the copper The conduction path generates a magnetic field and induces By integrating Hall IC and converting to ratio Voltage. Current is differentially sensed to reject Common mode field to improve the accuracy of magnetic field Noisy environment. Optimized the inherent equipment accuracy Through the magnetic field close to the hall sensor. The precise, proportional voltage is determined by Low-offset, chopper-stabilized BiCMOS Hall IC, it is Program for accuracy after packaging. Output When the current increases, the device has a positive slope Through the main copper conduction path (from pin 1 and 2. To pins 3 and 4), this is the path used for current sensing. The internal resistance of this conductive path is typically 1.2mΩ, Provide low power consumption. The terminals of the conductive path are electrically isolated Lead from the sensor (pins 5 to 8). This allows ACS725 current sensor IC for high-end current detection Applications that do not use high-end differential amplifiers Or other expensive isolation technology.

2. Feature

    1. AEC-Q100 qualified

    2. Differential Hall sensor suppresses common mode field

    3. 1.2 mΩ primary conductor resistance for low power loss And high surge current capacity

    4. Integrated shielding almost eliminates capacitive coupling From the current conductor to the chip, the output is greatly suppressed Noise caused by high dv/dt transients

    5. Industry-leading noise performance Increase bandwidth and Filter design technology

    6. High bandwidth 120 kHz analog output, faster Control the response time in the application

    7. The filter pin allows the user to filter the output to improve Low bandwidth resolution

    8. Patented integrated digital temperature compensation The circuit allows the close-loop accuracy to exceed Temperature in open loop sensor

    9. Small size, thin SOIC8 package, suitable for Space-constrained applications

  10. The filter pin simplifies the bandwidth limit for better results Low frequency resolution

3. Benefit

    1. 3.3 V, single power supply operation

    2. The output voltage is proportional to AC or DC current

    3. Factory adjusted sensitivity and static output voltage Improve accuracy

    4. Chopper stabilization results in extremely stable static The output voltage

    5. Almost zero hysteresis

    6. Proportional output of power supply voltage

4. Pin configuration

5. Pin description