ACS704ELC-005

Voltage - Supply: 4.5 V ~ 5.5 V
Response Time: 8µs
Polarization: Bidirectional
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Sensor Type: Hall Effect
Output: 2.5V
Operating Temperature: -40°C ~ 85°C
Series: -
Manufacturer: Allegro Microsystems Inc
Current - Sensing: ±5A
Packaging: Tape & Reel (TR)
Sensitivity: 133mV/A
Accuracy: ±1%
Frequency: 50kHz
Current - Supply: 8mA


Features:

• Small footprint, low-profile SOIC8 package
• 1.5 m internal conductor resistance
• Excellent replacement for sense resistors
• 800 V_RMS minimum isolation voltage beween pins 1-4 and 5-8
• 4.5 to 5.5 V, single supply operation
• 50 kHz bandwidth
• 133 mV/A output sensitivity and 15 A dynamic range
• Output voltage proportional to ac and dc currents
• Factory-trimmed for accuracy
• Extremely stable output offset voltage
• Near-zero magnetic hysteresis
• Ratiometric output from supply voltage


Specifications

Supply Voltage, V_CC ..........................................16 V
Reverse Supply Voltage, V_RCC .......................16 V
Output Voltage, V_OUT .......................................16 V
Reverse Output Voltage, V_ROUT....................0.1 V
Output Current Source, I_OUT(Source) .............. 3 mA
Output Current Sink, I_OUT(Sink).....................10 mA
Operating Temperature,
Maximum Junction, T_J(max).......................... 165°C
Storage Temperature, T_S ................65 to 170°C


Description

The Allegro ACS704 family of current sensors provides economical and precise solutions for 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 ACS704ELC-005 consists of a precision, 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 at the factory.

The output of the device ACS704ELC-005 has a positive slope (>V_CC / 2) 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 typically 1.5 m, 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 ACS704 family of sensors to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.

The ACS704 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 flip-chip uses hightemperature Pb-based solder balls, currently exempt from RoHS and WEEE. The device is fully calibrated prior to shipment from the factory.

Parameters:

Technical/Catalog Information	ACS704ELC-005
Vendor	Allegro Microsystems Inc
Category	Sensors, Transducers
Package / Case	8-SOIC
Voltage - Output	-
Polarization	Bidirectional
Accuracy	±1.5%
Operating Temperature	-40°C ~ 85°C
Voltage - Supply	4.5 V ~ 5.5 V
Response Time	8s
Sensor Type	Open Loop Current Transducers
Current - Supply	8mA
Frequency	50kHz
Sensitivity	133mV/A
Packaging	Bulk
Current - Sensing	5A
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	ACS704ELC 005 ACS704ELC005