ACS709 Allegro MicroSystems, Inc., ACS709 Datasheet
ACS709
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ACS709 Summary of contents
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... The ACS709 consists of a precision linear Hall sensor integrated circuit with a copper conduction path located near the surface of the silicon die. Applied current flows through the copper ...
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... Operating Ambient Temperature Junction Temperature Storage Temperature High Bandwidth, Fast Fault Response Current Sensor IC outputs. This allows the ACS709 family of sensor ICs to be used in applications requiring electrical isolation, without the use of opto-isolators or other costly isolation techniques. Applications include: • Motor control and protection • ...
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... ACS709 Hall Bias FAULT_EN VOC Sensitivity IP+ Trim Hall Amplifier IP– Terminal List Table Number 1 through 6 Pin-out Diagram 7 through 12 13, 14 FAULT_EN IP VOC IP VCC IP FAULT IP VIOUT IP– FILTER IP– VZCR IP– ...
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... ACS709 COMMON OPERATING CHARACTERISTICS Characteristic ELECTRICAL CHARACTERISTICS Supply Voltage 1 Nominal Supply Voltage Supply Current Output Capacitance Load Output Resistive Load Magnetic Coupling from Device Conductor to Hall Element Internal Filter Resistance 2 Primary Conductor Resistance ANALOG OUTPUT SIGNAL CHARACTERISTICS Full Range Linearity 3 4 Symmetry ...
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... ACS709 COMMON OPERATING CHARACTERISTICS Characteristic OVERCURRENT CHARACTERISTICS (continued) Overcurrent Fault Response Time Overcurrent Fault Reset Delay Overcurrent Fault Reset Hold Time Overcurrent Input Pin Resistance VOLTAGE REFERENCE CHARACTERISTICS Voltage Reference Output Voltage Reference Output Load Current Voltage Reference Output Drift 1 Devices are trimmed for maximum accuracy at V may be slightly degraded for V values other than 5 V ...
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... ACS709 X20B PERFORMANCE CHARACTERISTICS Characteristic Symbol Optimized Accuracy Range I P(OA) Linear Sensing Range I P(LIN) Performance Characteristics Noise 1 V NOISE(rms) 2,3 Sensitivity Sens Electrical Offset Voltage Total Output Error 2,4 E TOT 1 V noise (6 sigma noise) is equal to 6 × V pk-pk bandwidth. See Characteristic Performance page for graphs of noise versus C 2 See Characteristic Performance Data graphs for parameter distribution over ambient temperature range ...
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... Please refer to product FAQs R θJA page on Allegro web site for detailed information on ACS709 demo board. Tested with current and based on ACS709 demo board in 1 cu. ft. of still air. Please refer to product FAQs R TθJA page on Allegro web site for detailed information on ACS709 demo board ...
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... Capacitance (nF) High Bandwidth, Fast Fault Response Current Sensor IC Characteristic Performance Capacitor connected between FILTER pin and GND 0 Capacitance (nF) ACS709 Noise versus External Capacitor Value, C Capacitor connected between FILTER pin and GND = 5 V 900 800 700 600 500 400 300 ...
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... T A Nonlinearity versus Ambient Temperature 0.20 0.15 0.10 0.05 0 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 –50 - High Bandwidth, Fast Fault Response Current Sensor IC Characteristic Performance Data Data taken using the ACS709-20BB, V Accuracy Data 58.0 57.5 57.0 56.5 56.0 55.5 55.0 75 100 125 150 –50 (°C) 100.8 100.6 100.4 100.2 100.0 99.8 99.6 99.4 75 100 125 150 – ...
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... T A Nonlinearity versus Ambient Temperature 0.30 0.20 0.10 0 -0.10 -0.20 -0.30 –50 - High Bandwidth, Fast Fault Response Current Sensor IC Characteristic Performance Data Data taken using the ACS709-35BB, V Accuracy Data 29.0 28.8 28.6 28.4 28.2 28.0 27.8 27.6 27.4 75 100 125 150 –50 (°C) 101.0 100.8 100.6 100.4 100.2 100.0 99.8 99.6 99 ...
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... CC 0 – 0. Sens CC – 0 Sens CC Example: For ACS709LLFTR-35BB-T, if required overcurrent fault switchpoint and V required V can be calculated as follows: OC High Bandwidth, Fast Fault Response Current Sensor IC Setting Overcurrent Fault Switchpoint | Ioc | is the overcurrent fault switchpoint for a bi- directional (AC) current, which means a bi-directional ...
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... ACS709 Overcurrent Fault Operation The primary concern with high-speed fault detection is that noise may cause false tripping. Various applications have or need to be able to ignore certain faults that are due to switching noise or other parasitic phenomena, which are application dependant. The problem with simply trying to filter out this noise up front is that in high-speed applications, with asymmetric noise, the act of filtering introduces an error into the measurement ...
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... ACS709 6. This curve shows V charging external capacitor C CC through the internal PMOS pull-up. The slope is determined When the FAULT_EN pin is brought low, if the fault condi- tion still exists, the latched ¯ F ¯ ¯ A ¯ ¯ U ¯ ¯ L ¯ ¯ T ¯ pin will stay low until the fault condition is removed, then it will start resetting ...
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... ACS709 Definitions of Accuracy Characteristics Sensitivity (Sens). The change in device 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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... ACS709 Definitions of Dynamic Response Characteristics Propagation delay (t ). The time required for the device PROP output to reflect a change in the primary current signal. Propaga- tion delay is attributed to inductive loading within the linear IC package, as well as in the inductive loop formed by the primary conductor geometry. Propagation delay can be considered as a fixed time offset and may be compensated ...
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... ACS709 8.66 ±0. 24X 0.20 C 0.30 0.635 BSC 0.20 For Reference Only, not for tooling use (reference JEDEC MO-137 AE) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A Terminal #1 mark area ...