MAX4172(1996) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX4172 Datasheet PDF : 8 Pages
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Low-Cost, Precision, High-Side
Current-Sense Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +3V to +32V; RS+, RS- = 0V to 32V; TA = TMIN to TMAX; unless otherwise noted. Typical values are at V+ = +12V, RS+ = 12V,
TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Maximum Output Voltage
(OUT)
IOUT ≤ 1.5mA
V+ - 1.2 V
Bandwidth
Maximum Output Current
Transconductance
V+ Threshold for PG Output
Low (Note 2)
PG Output Low Voltage
Leakage Current into PG
IOUT
Gm
VOL
VSENSE = 100mV
VSENSE = 6.25mV (Note 1)
800
kHz
200
1.5
1.75
mA
Gm = IOUT / (VRS+ - VRS-),
TA = 0°C to +85°C
9.8
VSENSE = 100mV, VRS+ > 2.0V TA = -40°C to 0°C
9.7
10
10.2
mA/V
10
10.3
V+ rising
V+ falling
2.77
V
2.67
ISINK = 1.2mA, V+ = 2.9V, TA = +25°C
0.4
V
V+ = 2.5V, TA = +25°C
1
µA
Power-Off Input Leakage
Current (RS+, RS-)
V+ = 0V, VRS+ = VRS- = 32V
0.1
1
µA
OUT Rise Time
OUT Fall Time
OUT Settling Time to 1%
OUT Output Resistance
VSENSE = 0mV to 100mV, 10% to 90%
VSENSE = 100mV to 0mV, 90% to 10%
VSENSE = 5mV to 100mV
Rising
Falling
VSENSE = 150mV
400
ns
800
ns
1.3
µs
6
20
MΩ
Note 1: 6.25mV = 1/16 of typical full-scale sense voltage (C/16).
Note 2: Valid operation of the MAX4172 is guaranteed by design when PG is low.
__________________________________________Typical Operating Characteristics
(V+ = +12V, VRS+ = 12V, ROUT = 1kΩ, TA = +25°C, unless otherwise noted.)
1000
950
900
850
800
750
700
650
600
550
500
0
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
TA = +85°C
TA = +25°C
TA = -40°C
IOUT = 0mA
10
20
30
40
V+ (V)
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
OUTPUT ERROR
vs. SUPPLY VOLTAGE
VSENSE = 100mV
TA = +25°C
TA = +85°C
TA = -40°C
10
20
30
40
V+ (V)
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
0
C/16 LOAD OUTPUT ERROR
vs. SUPPLY VOLTAGE
VSENSE = 6.25mV
TA = -40°C
TA = +25°C
TA = +85°C
10
20
30
40
V+ (V)
_______________________________________________________________________________________ 3
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