Datasheet MAX471 (Maxim) - 4

Precision, High-Side Current-Sense Amplifiers MAX471/MAX472 ELECTRICAL CHARACTERISTICS—MAX472
(VCC = +3V to +36V, RG1 = RG2 = 200Ω, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage VCC 3 36 V Supply Current ICC ILOAD = 0A, excludes ISIGN; VCC = 3V to 20V 20 48 µA MAX472C 120 Input Offset Voltage VOS µV (Note 2) MAX472E 140 Input Bias Current IRG1, IRG2 20 35 µA Input Bias-Current Matching IOS IRG1 - IGR2 ±0.4 ±3.0 µA VSENSE = 100mV, MAX472C ±2 OUT Current Accuracy IRG/IOUT % VCC = 10V (Note 3) MAX472E ±2.5 MAX472C 2.5 VCC = 10V, No-Load OUT Error µA VSENSE = 0V MAX472E 3 VCC = 10V, MAX472C ±2.5 Low-Level OUT Error µA VSENSE = 3mV MAX472E ±3.0 Power-Supply Rejection Ratio PSRR 3V ≤ VCC ≤ 36V, VSENSE = 100mV 0.1 %/V SIGN Threshold (VSENSE MAX472C 60 120 VCC = 10V µV required to switch SIGN) MAX472E 60 140 SIGN Output Leakage Current VSIGN = 36V 1.0 µA SIGN Output Sink Current VSIGN = 0.3V 0.1 mA Shutdown Supply Current ICC(SHDN) VSHDN = 2.4V; VCC = 3V to 20V 1.5 18.0 µA SHDN Input Low Voltage VIL 0.3 V SHDN Input Low Current IIL VSHDN = 0V 1.0 µA SHDN Input High Voltage VIH 2.4 V SHDN Input High Current IIH VSHDN = 2.4V 1.0 µA OUT Output Voltage Range VOUT 0 VCC - 1.5 V OUT Output Resistance ROUT IOUT = 1.5mA 1 3 MΩ V OUT Rise, Fall Time t SENSE = 5mV to 150mV, ROUT = 2kΩ, R, tF 4 µs COUT = 50pF, 10% to 90% OUT Settling Time to 1% V t SENSE = 5mV to 150mV, ROUT = 2kΩ, 15 µs of Final Value s COUT = 50pF Maximum Output Current IOUT 1.5 mA
Note 2:
VOS is defined as the input voltage (VSENSE) required to give minimum IOUT.
Note 3:
VSENSE is the voltage across the sense resistor.
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