The Allegro® ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, automotive,
commercial, and communications systems. The device 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 device 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 proportionalvoltage. 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.
The output of the device has a positive slope (>VIOUT(Q))when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sensing. The internal resistance of this conductive path is 1.2 mΩ typical, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 5× overcurrent conditions. The terminals of the conductive path are electrically isolated from the sensor leads (pins 5 through 8). This allows the ACS712 current sensor to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.
The ACS712 is provided in a small, surface mount SOIC8 package.The leadframe is plated with 100% matte tin, which is
compatible with standard lead (Pb) free printed circuit board assembly processes.Internally, the device is Pb-free, except for flip-chip high-temperature-P-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.
1.Pin diagram:
2.Absolute Maximum Ratings:
3.Performance Electrical Characteristics:
TOP = -40°C to 85°C1, CF = 1 nF, and VCC = 5 V, unless otherwise specified
4.Characteristic Performance:
IP = 30 A, Sens = 66 mV/A unless otherwise specified
▪ Low-noise analog signal path
▪ Device bandwidth is set via the new FILTER pin
▪ 5 µs output rise time in response to step input current
▪ 50 kHz bandwidth
▪ Total output error 1.5% at TA= 25°C, and 4% at -40°C to 85°C
▪ Small footprint, low-profile SOIC8 package
▪ 1.2 mΩ internal conductor resistance
▪ 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
▪ 5.0 V, single supply operation
▪ 66 to 185 mV/A output sensitivity
▪ Output voltage proportional to AC or DC currents
▪ Factory-trimmed for accuracy
▪ Extremely stable output offset voltage
▪ Nearly zero magnetic hysteresis
▪ Ratiometric output from supply voltage
why choose us :
advantage:
1.Produce Range
Yangjiang RUIXIAO Enterprise Co,.Ltd,major in the electronic component , who have wide range of products,
such as IC,resistor , capacitor , mosfet , diodes, module , LED, relay, lcd. pcb board . and so. the brand involves:SHARP, POWER, , NS, ON, ST , IR, VISHAY , TOSHIBA, FAIRCHILD,MICROCHIP, ATMEL,EVERYLIGHT all the kinds of electronic component you need will be find in here.
2.Scope of application
the product is widely used in Automotive industry control,new energy industry,Audio,Home appliances equipment,Communication industry.it can meet the diverse needs of customers
3.service:
with the "User first, customer first" Company motto, quality assurance , economic price , fast Delivery time is our only faith. we will try our best to make every customer to enjoy the the most flexible,efficient services.We sincere hope that we can seek the common development and cooperation with the customer together to achieve a win-win situation.
4.Logistics:
we can send the goods to the customer's country directly by the international logistics. no matter send by air or by sea.
we will try our best to let the customer to get the parcel more convenient .
(noted:Not bear any fee and tax of the transportation cost.)
