MAX472 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX472 Datasheet PDF : 12 Pages
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Precision, High-Side
Current-Sense Amplifiers
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
Supply Voltage
Supply Current
Input Offset Voltage
(Note 2)
Input Bias Current
Input Bias-Current Matching
OUT Current Accuracy
No-Load OUT Error
Low-Level OUT Error
Power-Supply Rejection Ratio
SIGN Threshold (VSENSE
required to switch SIGN)
SIGN Output Leakage Current
SIGN Output Sink Current
Shutdown Supply Current
SHDN Input Low Voltage
SHDN Input Low Current
SHDN Input High Voltage
SHDN Input High Current
OUT Output Voltage Range
OUT Output Resistance
OUT Rise, Fall Time
OUT Settling Time to 1%
of Final Value
Maximum Output Current
SYMBOL
CONDITIONS
VCC
ICC
ILOAD = 0A, excludes ISIGN; VCC = 3V to 20V
MAX472C
VOS
MAX472E
IRG1, IRG2
IOS
IRG1 - IGR2
IRG/IOUT
VSENSE = 100mV,
VCC = 10V (Note 3)
MAX472C
MAX472E
VCC = 10V,
VSENSE = 0V
MAX472C
MAX472E
PSRR
VCC = 10V,
VSENSE = 3mV
MAX472C
MAX472E
3V ≤ VCC ≤ 36V, VSENSE = 100mV
VCC = 10V
MAX472C
MAX472E
ICC(SHDN)
VIL
IIL
VIH
IIH
VOUT
ROUT
VSIGN = 36V
VSIGN = 0.3V
VSHDN = 2.4V; VCC = 3V to 20V
VSHDN = 0V
VSHDN = 2.4V
IOUT = 1.5mA
tR, tF
VSENSE = 5mV to 150mV, ROUT = 2kΩ,
COUT = 50pF, 10% to 90%
ts
VSENSE = 5mV to 150mV, ROUT = 2kΩ,
COUT = 50pF
IOUT
MIN TYP MAX UNITS
3
36
V
20
48
µA
120
µV
140
20
35
µA
±0.4 ±3.0 µA
±2
%
±2.5
2.5
µA
3
±2.5
µA
±3.0
0.1
%/V
60
120
µV
60
140
1.0
µA
0.1
mA
1.5
18.0
µA
0.3
V
1.0
µA
2.4
V
1.0
µA
0
VCC - 1.5
V
1
3
MΩ
4
µs
15
µs
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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