Datasheet ACS71240 (Allegro) - 8

Automotive-Grade, Galvanically Isolated Current Sensor IC ACS71240 with Common-Mode Field Rejection and Overcurrent Detection in Small Footprint Low-Profile Packages ACS71240KEXBLT-010B3 PERFORMANCE CHARACTERISTICS:
Over full range of TA, VCC = 3.3 V, unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE
Optimized Sensing Range IPR –10 – 10 A Sensitivity Sens IPR(min) < IP < IPR(max) – 132 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – 1.65 – V
ACCURACY PERFORMANCE
I Total Output Error [2] E P = 10 A, TA = 25°C to 125°C –2.5 ±1.4 2.5 % TOT IP = 10 A, TA = –40°C to 25°C –6 ±1.8 6 %
TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE / (Sens × IP)
I Sensitivity Error E P = 10 A, TA = 25°C to 125°C –2 ±1.1 2 % SENS IP = 10 A, TA = –40°C to 25°C –5.5 ±1.7 5.5 % I Offset Voltage Error V P = 0 A, TA = 25°C to 125°C –15 ±9.7 15 mV OE IP = 0 A, TA = –40°C to 25°C –30 ±8.5 30 mV
ACCURACY PERFORMANCE INCLUDING LIFETIME DRIFT [4]
Total Output Error Including IP = 10 A, TA = 25°C to 125°C –5.7 ±1.8 5.7 % Lifetime Drift [5] ETOT_drift IP = 10 A, TA = –40°C to 25°C –6 ±1.5 6 % Sensitivity Error Including IP = 10 A, TA = 25°C to 125°C –5.1 ±1.2 5.1 % Lifetime Drift [6] ESENS_drift IP = 10 A, TA = –40°C to 25°C –5.6 ±1.2 5.6 % Offset Voltage Error Including IP = 0 A, TA = 25°C to 125°C –28 ±4.5 28 mV Lifetime Drift [7] VOE_drift IP = 0 A, TA = –40°C to 25°C –30 ±4.3 30 mV [1] Typical values with ± are 3 sigma values, except for lifetime drift, which are the average value including drift (from the worst case stress) after AEC-Q100 qualification. [2] Percentage of IP. [3] A single device 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. [4] Lifetime drift characteristics are based on AEC-Q100 qualification results. [5] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst drift observed was 6.1%. [6] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst drift observed was 4%. [7] All devices stayed within min/max limits throughout AEC-Q100 qualification. The worst drift observed was 22 mV.
ACS71240KEXBLT-010B3-115 Variant Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NON-STANDARD FAULT CHARACTERISTICS
FAULT Operating Point IFAULT – ±1.15 × IPR – A [1] Typical values with ± are 3 sigma values 8 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com