ACS717KMATR-20B-T

• Product introduction

Allegro™ ACS717Current sensorICs are economical solutions for high isolation voltages for AC/DC sensing in industrial, commercial, and communications systems. While the wide-body construction provides the creepage and clearance required for high isolation voltages, the small package is ideal for applications where space is at a premium. Typical application areas include motor control, load detection and management, switching power supplies, and overcurrent fault protection.

The device features a precise, low-offset linear Hall sensor circuit with a copper conduction path near the die surface. The applied current through this copper conduction path generates a magnetic field that can be induced by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized by the proximity of the magnetic field to the Hall sensor. The low-offset, chopper-stabilized BiCMOS Hall IC provides a ratiometric voltage and is also programmed accurately after packaging. The output of the device has a positive slope when the current increases through the primary copper conductor path (from pins 1-4 to pins 5-8), which is used for current sensing. This conduction path has a typical internal resistance of 0.85mΩ and low power loss.

The terminals of the conduction path are galvanically isolated from the sensor leads (pins 10-15). This allows the ACS717 current sensor to be used in high-level current sensing applications without the need for high-side differential amplifiers or other expensive isolation techniques.

The ACS717 is available in a small package mount SOICW16 (suffix MA) with a flat surface. The device is Pb-free and features 100% matte tin plating. The device is fully calibrated before shipment at the factory.

IEC/UL 60950-1 Ed.2 Certified:
Dielectric strength = 4800 Vrms (test 60 seconds)
Base isolation voltage = 1550 Vpeak
Enhanced isolation voltage = 800 Vpeak
The small, low-profile SOIC16 wide-body package is ideal for space-constrained applications that require high galvanic isolation
0.85 mΩ primary conductor with low power loss and high inrush current capability.
400 μA RMS √Hz Low Noise Density Typical Reference Noise 70 mA (rms) for Maximum Bandwidth (40 kHz)
3.3 V, single-supply operation
The output voltage proportional to the AC and DC current
Factory calibrated sensitivity and quiescent output voltage for greater accuracy
Stable chopping results in an extremely stable quiescent output voltage
Proportional output of the supply voltage
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