Datasheet ACS724 (Allegro) - 10

Automotive-Grade, Galvanically Isolated Current Sensor IC ACS724 with Common-Mode Field Rejection in a Small-Footprint SOIC8 Package xLLCTR-20AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE
Current-Sensing Range IPR 0 – 20 A Sensitivity Sens IPR(min) < IP < IPR(max) – 200 – mV/A Zero-Current Output Voltage VIOUT(Q) Unidirectional, IP = 0 A – VCC × 0.1 – V
ACCURACY PERFORMANCE
I Total Output Error [2] E P = IPR(max), TA = 25°C to 150°C –2 ±0.7 2 % TOT IP = IPR(max), TA = –40°C to 25°C –6 ±4 6 %
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP)
I Sensitivity Error E P = IPR(max), TA = 25°C to 150°C –1.5 ±0.7 1.5 % sens IP = IPR(max), TA = –40°C to 25°C –5.5 ±4 5.5 % I Offset Voltage V P = 0 A, TA = 25°C to 150°C –10 ±6 10 mV OE IP = 0 A, TA = –40°C to 25°C –30 ±8 30 mV
LIFETIME DRIFT CHARACTERISTICS
Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] 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. See Application Information section. 10 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com