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Allegro ™ ACS723 current sensor IC is industrial, commercial and communication system of ac/dc sensing accurate economic solutions. Small package is very suitable for the application of the space is narrow, due to reduced the area of the circuit board, also reduced the cost. Typical applications include motor control, load detection and management, switch power supply, and overcurrent fault protection.
This device has low precision, linear hall sensor circuit, migration and have copper pathway in near the surface of the wafer. Through the current application of the copper conduction path can be generated can be integrated hall IC and translated into is proportional to the voltage of the induced magnetic field. Through the magnetic field with hall sensor near to optimize precision device. Accurate scale from low bias voltage stability chopper BiCMOS hall IC, the IC includes Allegro patent digital temperature compensating device, can realize the precise performance based on the temperature. Through a copper conductor path (from pins 1 and 2 to pin 3 and 4) the current increases, the device's output has a positive slope, the path is used for electrical measuring flu. Typical values of the internal resistance of the conductive path is 0.65 m Ω (using LC SOIC8 package), and 0.85 m Ω (in MA SOIC16W encapsulation), both with low power consumption characteristics.
Conduction path of terminals and sensor wire (pin 5-8) using electrical isolation. Which can be used in high level current sensing applications ACS725 current sensor, and the need for high level side differential amplifier or other expensive isolation technique.
ACS723 using small flat surface mount SOIC8 package, or high isolation voltage surface installation seat SOIC16W wide-body encapsulation. Fog pin frame with 100% of tin plating, with standard lead (Pb) printed circuit board assembly process compatible. The device's internal lead-free, except flip chip high temperature lead based solder ball, now this device belongs to RoHS exemption product. The device in the factory before shipment, after full calibration.
By using patent integrated digital temperature compensation circuit, you can obtain approximate closed loop in open loop sensor temperature measurement accuracy.
UL60950-1 (Ed. 2) certification
Dielectric strength voltage
ACS723LLC: 2.4 kVrms
ACS723KMA: 4.8 kVrms
Basic isolation working voltage
ACS723LLC: 420 Vpk or VDC / 297 Vrms
ACS723KMA: 1550 Vpk / 1097 Vrms or VDC
Enhance voltage isolation work
ACS723KMA: 800 Vpk / 565 Vrms or VDC
With the proprietary amplifier and filter design techniques, this device has the industry leading performance, noise and bandwidth also improved significantly
Pin available bandwidth: 80 kHz (high bandwidth applications) or 20 kHz (low noise performance).
A conductor, low power loss, large capacity of impact resistance current.
Ω ACS723LLC: 0.65 m
Ω ACS723KMA: 0.85 m
Packaging:
ACS723LLC: small flat SOIC8 package suitable for space applications
ACS723KMA: flat SOIC16 wide-body assembly, suitable for high isolation voltage applied in the narrow space
ACS723LLC: integrated block actually eliminate the conductor from the current to the capacitive coupling of the chip, inhibit the high dv/dt output noise caused by transient
4.5 to 5.5 volts, single power supply operation
The output voltage is proportional to the ac/dc current
Factory calibrated and static output voltage sensitivity to achieve higher accuracy
Stable chopper extremely stable static output voltage
Nearly zero hysteresis
The power supply voltage is proportional to the output
