Datasheet ACS71240 (Allegro) - 6

Automotive-Grade, Galvanically Isolated Current Sensor IC ACS71240 with Common-Mode Field Rejection and Overcurrent Detection in Small Footprint Low-Profile Packages COMMON ELECTRICAL CHARACTERISTICS:
Valid through the full range of TA and VCC, unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit ELECTRICAL CHARACTERISTICS
5 V variant 4.5 5.0 5.5 V Supply Voltage VCC 3.3 V variant 3.0 3.3 3.6 V 5 V variant, no load on V Supply Current I IOUT – 10 12 mA CC 3.3 V variant, no load on VIOUT – 7.5 12 mA Output Capacitance Load CL VIOUT to GND – – 4.7 nF Output Resistive Load RL VIOUT to GND 10 – – kΩ QFN-12 package – 0.6 – mΩ Primary Conductor Resistance RIP TA = 25°C SOIC-8 package – 1.2 – mΩ QFN-12 package – 10 – G/A Primary Hall Coupling Factor G1 TA = 25°C SOIC-8 package – 11 – G/A QFN-12 package – –2 – G/A Secondary Hall Coupling Factor G2 TA = 25°C SOIC-8 package – –2.8 – G/A Hall Plate Sensitivity Matching Sensmatch TA = 25°C – ±1 – % QFN-12 package – 1.2 – mA/G Common Mode Field Rejection CMFR Offset due to DC common field SOIC-8 package – 0.6 – mA/G Rise Time t TA = 25°C, CL = 1 nF; input current step causing r 1 V output swing – 3 4 [2] μs Propagation Delay t TA = 25°C, CL = 1 nF; input current step causing pd 1 V output swing – 1.6 2.2 [2] μs Response Time t TA = 25°C, CL = 1 nF; input current step causing RESPONSE 1 V output swing – 4 4.9 [2] μs Bandwidth BW Small signal –3 dB; CL = 1 nF – 120 – kHz VCC = 5.0 V, input referred, TA = 25°C, CL = 1 nF – 100 – µARMS/ √Hz Noise Density IND VCC = 3.3 V, input referred, TA = 25°C, CL = 1 nF 150 µARMS/ √Hz V Noise I CC = 5.0 V, input referred, TA = 25°C, CL = 1 nF – 52 – mARMS N VCC = 3.3 V, input referred, TA = 25°C, CL = 1 nF – 78 – mARMS Up to I Nonlinearity E P = 10 A QFN-12 package –1 – 1 % LIN Through full range of IP SOIC-8 package –1 – 1 % VCC = VCC ±10%, TA = 25°C, DC to 1 kHz – 40 – dB Power Supply Rejection Ratio PSRR VCC = VCC ±10%, TA = 25°C, 1 kHz to 20 kHz – 30 – dB VCC = VCC ±10%, TA = 25°C, 20 kHz to 60 kHz – 20 – dB V Output Saturation Voltage [3] SAT_H RL = 10 kΩ VCC – 0.3 – – V VSAT_L RL = 10 kΩ – – 0.3 V Power-On Time t Output reaches 90% of steady-state level, PO TA = 25°C, IP = IPR(max) applied – 80 – μs Shorted Output-to-Ground Current ISC(GND) TA = 25°C – 30 – mA Shorted Output-to-VCC Current ISC(VCC) TA = 25°C – 1.8 – mA Continued on next page... 6 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com