ACS712T

Product Summary

The ACS712T is a Fully Integrated, Hall Effect-Based, Linear Current Sensor. It provides economical and precise solutions for AC or DC current sensing in industrial, automotive, commercial, and communications systems. The ACS712T package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The ACS712T consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging.

Parametrics

ACS712T absolute maximum ratings: (1)Supply Voltage VCC: 8 V; (2)Reverse Supply Voltage VRCC: –0.1 V; (3)Output Voltage VIOUT: 8 V; (4)Reverse Output Voltage VRIOUT: –0.1 V; (5)Output Current Source IIOUT(Source): 3 mA; (6)Output Current Sink IIOUT(Sink): 10 mA; (7)Overcurrent Transient Tolerance IP: 60 A; (8)Maximum Transient Sensed Current IR(max): 60 A; (9)Nominal Operating Ambient Temperature TA Range E: –40 to 85 ℃; (10)Maximum Junction TJ(max): 165 ℃; (11)Storage Temperature Tstg: –65 to 170 ℃.

Features

ACS712T features: (1)Low-noise analog signal path; (2)Device bandwidth is set via the new FILTER pin; (3)5 μs output rise time in response to step input current; (4)50 kHz bandwidth; (5)Total output error 1.5% at TA = 25℃, and 4% at -40℃ to 85℃; (6)Small footprint, low-profile SOIC8 package; (7)1.2 mΩ internal conductor resistance; (8)2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8; (9)5.0 V, single supply operation; (10)66 to 185 mV/A output sensitivity; (11)Output voltage proportional to AC or DC currents; (12)Factory-trimmed for accuracy; (13)Extremely stable output offset voltage; (14)Nearly zero magnetic hysteresis; (15)Ratiometric output from supply voltage.

Diagrams