ACS712 Allegro MicroSystems, Inc., ACS712 Datasheet
ACS712
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ACS712 Summary of contents
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... TÜV America Certificate Number: U8V 06 05 54214 010 Package: 8 Lead SOIC (suffix LC) Approximate Scale 1:1 Application 1. The ACS712 outputs an analog signal, V that varies linearly with the uni- or bi-directional primary sensed current recommended for noise management, with values that depend on the application. ...
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... 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. ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor VCC (Pin 8) Hall Current Drive IP+ Sense Temperature (Pin 1) IP+ (Pin 2) IP− (Pin 3) IP− (Pin 4) Terminal List Table Number 1 and 2 3 and Fully Integrated, Hall Effect-Based Linear Current Sensor with ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor COMMON OPERATING CHARACTERISTICS Characteristic Symbol ELECTRICAL CHARACTERISTICS Supply Voltage V CC Supply Current I CC Output Capacitance Load C LOAD Output Resistive Load R LOAD Primary Conductor Resistance R PRIMARY Rise Time t r Frequency Bandwidth f Nonlinearity E LIN Symmetry ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor x05B PERFORMANCE CHARACTERISTICS Characteristic Symbol Optimized Accuracy Range I P Sensitivity Sens Noise V NOISE(PP) Zero Current Output Slope ∆I OUT(Q) Sensitivity Slope ∆Sens 2 Total Output Error E TOT 1 Device may be operated at higher primary current levels not exceeded ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Mean Supply Current versus Ambient Temperature 10.30 10.25 10.20 10.15 10. 10.05 CC 10.00 9.95 9.90 9.85 9.80 9.75 -50 - (°C) A Magnetic Offset versus Ambient Temperature 0 –0.5 –1.0 –1.5 –2 –2.5 After excursion –3.0 –3.5 –4.0 –4.5 – ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Mean Supply Current versus Ambient Temperature 9.7 9.6 9 9.4 CC 9.3 9.2 9.1 -50 - (°C) A Magnetic Offset versus Ambient Temperature 0 –0.5 –1.0 –1.5 –2.0 –2 After excursion –3.0 –3.5 –4.0 –4.5 – ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Mean Supply Current versus Ambient Temperature 9.6 9.5 9 9.3 CC 9.2 9.1 9.0 8.9 -50 - (°C) A Magnetic Offset versus Ambient Temperature 0 –0.5 –1.0 –1.5 –2.0 –2 After excursion –3.0 –3.5 –4.0 –4.5 – ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Definitions of Accuracy Characteristics Sensitivity (Sens). The change in sensor output in response change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity ( and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is pro- grammed at the factory to optimize the sensitivity (mV/A) for the full-scale current of the device ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Definitions of Dynamic Response Characteristics Power-On Time (t ). When the supply is ramped to its operat- PO ing voltage, the device requires a finite time to power its internal components before responding to an input magnetic field. Power-On Time defined as the time it takes for the output PO voltage to settle within ± ...
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... ACS712 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Chopper Stabilization is an innovative circuit technique that is used to minimize the offset voltage of a Hall element and an asso- ciated on-chip amplifier. Allegro patented a Chopper Stabiliza- tion technique that nearly eliminates Hall IC output drift induced by temperature or package stress effects ...
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... D1 I LT1178 1N914 0.1 μF Application 3. This configuration increases gain to 610 mV/A (tested using the ACS712ELC-05A). D1 1N4448W A-to-D Converter C1 Application Overcurrent Fault Latch. Fault threshold set by R1 and R2. This circuit latches an overcurrent fault and holds it until the 5 V rail is powered down 100 kΩ ...
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... With this circuit architecture, users can implement a simple (see F RC filter via the addition of a capacitor, C from the FILTER pin to ground. The buffer amplifier inside of the ACS712 (located after the internal resistor and FILTER pin connection) eliminates the attenuation caused by the resistive ⎞ . ⎟ ...
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... SEATING PLANE 1.75 MAX 1.27 0. ACS712T RLCPPP L...L YYWW For the latest version of this document, visit our website: www.allegromicro.com 4º 0.21 0.84 0.25 SEATING PLANE GAUGE PLANE All dimensions nominal, not for tooling use (reference JEDEC MS-012 AA) Dimensions in millimeters A Terminal #1 mark area ...