Datasheet ACS37612 (Allegro) - 6

Coreless, High Precision, Hall-Effect Current Sensor IC ACS37612 with Common-Mode Field Rejection and High Bandwidth (240 kHz) COMMON OPERATING CHARACTERISTICS (continued):
Valid at TOP = –40°C to 150°C and VCC = 5 V, unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. Max. Unit QUIESCENT OUTPUT VOLTAGE (VOUT(Q))
V Bidirectional variant, no magnetic field, OUT(QBI) T – VCC / 2 – V Quiescent Output Voltage A = 25°C; VOUT(QBI) ratiometric to VCC V Unidirectional variant, no magnetic field, OUT(QUNI) T – 0.1 × VCC – V A = 25°C; VOUT(QUNI) ratiometric to VCC
ERROR COMPONENTS
Clamp Ratiometry Error RatERRCLP VCC = ±5% variation of nominal supply voltage – ±1.0 – % Noise BN TA = 25°C, CL = 1 nF – 2 – mGRMS /
√
(Hz) Nonlinearity ELIN Up to full-scale output –1 ±0.45 1 % Common Mode Field Rejection Ratio CMFR Measured at 100 G – 40 – dB [1] UVLO feature is only available on part numbers programmed with a 5 V nominal supply voltage. [2] Timing specified does not include potential effect of skin effect on conductor; value will depend on busbar/PCB design.
-005B5 PERFORMANCE CHARACTERISTICS: TA = –40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Unit NOMINAL PERFORMANCE
Differential Magnetic Range BDIFF –400 – 400 G Sensitivity Sens VCC(min) ≤ VCC ≤ VCC(max) – 5 – mV/G
ACCURACY PERFORMANCE
T Noise V A = 25°C, CL = 1 nF, BW = 140 kHz – 4.5 – mVRMS N TA = 25°C, CL = 1 nF, BW = 240 kHz – 6.5 – mVRMS Sensitivity Error SensERR TA = 25°C –2 ±1 2 % T Sensitivity Drift Over Temperature ΔSens A = 25°C to 150°C –2 ±1 2 % TC TA = –40°C to 25°C –2 ±1 2 %
QUIESCENT VOLTAGE OUTPUT ERROR
Factory Quiescent Voltage Output Error VQVOERR TA = 25°C –5 ±3 5 mV Quiescent Voltage Output TA = 25°C to 150°C –5 ±3 5 mV Temperature Error VOUT(Q)TC TA = –40°C to 25°C –5 ±3 5 mV QVO Ratiometry Error VRatERRQVO VCC = ±5% variation of nominal supply voltage –7.5 ±2.5 7.5 mV Sens Ratiometry Error RatERRSens VCC = ±5% variation of nominal supply voltage –1.25 ±0.5 1.25 %
LIFETIME DRIFT CHARACTERISTICS [2]
QVO Lifetime Drift VQVOLife TA = 25°C – 1.4 – mV Sens Lifetime Drift SensERRLife TA = 25°C – 0.6 – % QVO TC Lifetime Drift VQVOTCLife TA = 25°C to 150°C – 1.5 – mV Sens TC Lifetime Drift SensTCLife TA = 25°C to 150°C – 0.6 – % [1] All typical values are ±3 sigma. [2] Typical lifetime value corresponds to worse case average drift found during AEC-Q100 qualification. 6 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com