Datasheet

Low-Cost, UCSP/SOT23, Micropower, High-Side
Current-Sense Amplifier with Voltage Output
Typical Operating Characteristics
(V
CC
= 12V, V
RS+
= 12V, V
SENSE
= 100mV, T
A
= +25°C, unless otherwise noted.)
25.0
27.5
30.0
32.5
35.0
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4372 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (μA)
012164 8 20 24 28
A
V
= +100V/V
A
V
= +50V/V
A
V
= +20V/V
V
SENSE
= 5mV
0
5
10
15
20
25
30
35
40
-40 10 60-15 35 85
SUPPLY CURRENT vs. TEMPERATURE
MAX4372T toc02
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
V
SENSE
= 5mV
28.0
29.0
28.5
30.0
29.5
31.5
31.0
30.5
32.0
SUPPLY CURRENT
vs. COMMON-MODE VOLTAGE
MAX4372 toc03
COMMON-MODE VOLTAGE (V)
SUPPLY CURRENT (μA)
012164 8 20 24 28
A
V
= +100V/V
A
V
= +50V/V
A
V
= +20V/V
V
SENSE
= 5mV
-1.2
-0.8
-1.0
-0.2
-0.4
-0.6
0.4
0.2
0
0.6
0105 15202530
TOTAL OUTPUT ERROR
vs. SUPPLY VOLTAGE
MAX4372 toc04
SUPPLY VOLTAGE (V)
OUTPUT ERROR (%)
G = +100V/V
G = +50V/V
G = +20V/V
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0105 15202530
TOTAL OUTPUT ERROR
vs. COMMON-MODE VOLTAGE
MAX4372T toc07
COMMON-MODE VOLTAGE (V)
OUTPUT ERROR (%)
G = +100V/V
G = +50V/V
G = +20V/V
-1.0
-0.5
0.5
0
1.0
1.5
010050 150 200 250 300
TOTAL OUTPUT ERROR vs. V
SENSE
MAX4372T toc05
V
SENSE
(mV)
OUTPUT ERROR (%)
A
V
= +100V/V
A
V
= +20V/V
A
V
= +50V/V
-45
-90
100 100k10k1k
POWER-SUPPLY REJECTION
vs. FREQUENCY
-75
-85
-55
-65
-40
-70
-80
-50
-60
MAX4372T toc06
FREQUENCY (Hz)
PSR (dB)
-1.0
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
GAIN ACCURACY vs. TEMPERATURE
MAX4372T toc08
TEMPERATURE (°C)
GAIN ACCURACY (%)
-40 10 60-15 35 85
A
V
= +20V/V
A
V
= +50V/V
A
V
= +100V/V
-1.0
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-40 10 60-15 35 85
TOTAL OUTPUT ERROR vs. TEMPERATURE
MAX4372T toc09
TEMPERATURE (°C)
TOTAL OUTPUT ERROR (%)
A
V
= +50V/V
A
V
= +100V/V
A
V
= +20V/V
4
Maxim Integrated
MAX4372T/F/H