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ACS720KLATR-35AB-T Datasheet(PDF) 8 Page - Allegro MicroSystems |
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ACS720KLATR-35AB-T Datasheet(HTML) 8 Page - Allegro MicroSystems |
8 / 35 page High Accuracy, Dual Fault, Galvanically Isolated Current Sensor in SOIC16 Wide-Body Package ACS720 8 Allegro MicroSystems, LLC 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com x15AB-4 PERFORMANCE CHARACTERISTICS : Valid at TA = – 40°C to 125°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE Optimized Accuracy Range IPR –15 – 15 A Sensitivity Sens – 90 – mV/A Zero-Current Output Voltage VIOUT(Q) IP = 0 A – 1.5 – V Fast Fault Trip Level IFF(HIGH) VOC_F = 0.7 × VCC – 33.8 – A IFF(LOW) VOC_F = 0.54 × VCC – 26.3 – A Slow Fault Trip Level ISF(HIGH) VOC_S = 0.7 × VCC – 18.8 – A ISF(LOW) VOC_S = 0.3 × VCC – 7.5 – A TOTAL OUTPUT ERROR COMPONENTS [2] ETOT(IP) = {[VIOUT_ideal(IP) – VIOUT(IP)] / [Sensideal(IP) × IP]} × 100 (%) Total Output Error[3] ETOT IP = IPR(max), TA = 25°C to 125°C –1.5 ±0.8 1.5 % IP = IPR(max), TA = –40°C to 25°C –4 ±1.6 4 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 125°C –1.5 ±0.6 1.5 % IP = IPR(max), TA = –40°C to 25°C –4 ±1.6 4 % Offset Voltage VOE IP = 0 A, TA = 25°C to 125°C –10 ±4 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±9 30 mV OVERCURRENT FAULT PERFORMANCE Fast Fault Error EFF(HIGH)+ VOC_F = 0.7 × VCC, Positive IP, TA = 25°C –10 ±5 10 % VOC_F = 0.7 × VCC, Positive IP, TA = 25°C to 125°C –15 ±5 15 % VOC_F = 0.7 × VCC, Positive IP, TA = –40°C to 25°C – ±25 – % EFF(HIGH)– VOC_F = 0.7 × VCC, Negative IP, TA = 25°C –12 ±6 12 % VOC_F = 0.7 × VCC, Negative IP, TA = 25°C to 125°C –30 ±20 30 % VOC_F = 0.7 × VCC, Negative IP, TA = –40°C to 25°C – ±35 – % EFF(LOW)+ VOC_F = 0.54 × VCC, Positive IP, TA = 25°C –10 ±7 10 % VOC_F = 0.54 × VCC, Positive IP, TA = 25°C to 125°C –15 ±10 15 % VOC_F = 0.54 × VCC, Positive IP, TA = –40°C to 25°C – ±25 – % EFF(LOW)- VOC_F = 0.54 × VCC, Negative IP, TA = 25°C –15 ±7 15 % VOC_F = 0.54 × VCC, Negative IP, TA = 25°C to 125°C –40 ±25 40 % VOC_F = 0.54 × VCC, Negative IP, TA = –40°C to 25°C – ±45 – % Slow Fault Error ESF(HIGH) VOC_S = 0.7 × VCC, IP rising –6 ±3 6 % ESF(LOW) VOC_S = 0.3 × VCC, IP rising –12 ±5 12 % Fast Fault Delay Code – 4 – Fast Fault Mask Time tm(ff) – 1.5 – µs Slow Fault Delay Code – 4 – FAULT CHARACTERISTICS Fast Fault Response Time tR(FF) Time from IP rising above IFF until VFAULT_F < VFAULTL for a current step from 0 to 1.2 × IFAULT(FAST); RPU = 10 kΩ, 100 pF from FAULT_F to ground – 3.5 – μs Slow Fault Response Time tR(SF) Time from IP rising above ISF until VFAULT_S < VFAULTL for a current step from 0 to 1.2 × IFAULT(SLOW); RPU = 10 kΩ, 100 pF from FAULT_S to ground – 13 – μs [1] Typical values with +/- are 3 sigma values. [2] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. [3] Percentage of IP, with IP = IPR(max). |
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