Datasheet

Low-Cost, SOT23, Voltage-Output,
High-Side Current-Sense Amplifier
370
390
380
410
400
430
420
440
010155 202530
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4173 TOC01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
MAX4173T
MAX4173F
MAX4173H
200
300
250
450
400
350
550
500
150
-50 -5 10-35-20 2540557085
SUPPLY CURRENT vs. TEMPERATURE
MAX4173 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
MAX4173T
MAX4173F
MAX4173H
0
0.4
0.2
0.8
0.6
1.2
1.0
1.4
0 1.0 1.50.5 2.0 2.5 28
SUPPLY CURRENT vs. RS+ VOLTAGE
MAX4173 toc03
V
RS+
(V)
SUPPLY CURRENT (mA)
MAX4173T
MAX4173H
MAX4173F
-0.60
-0.45
-0.30
-0.15
0
0.15
0.30
0.45
0.60
0105 15202530
TOTAL OUTPUT ERROR vs.
SUPPLY VOLTAGE
MAX4173 toc04
SUPPLY VOLTAGE (V)
TOTAL OUTPUT ERROR (%)
MAX4173F
V
SENSE
= 100mV
MAX4173T
MAX4173H
0
-100
100 1k 10k 100k 1M 10M
POWER-SUPPLY REJECTION
vs. FREQUENCY
-80
MAX4173 toc07
FREQUENCY (Hz)
PSR (dB)
-60
-40
-20
-10
-90
-70
-50
-30
-6
-2
-4
2
0
4
6
010155 202530
TOTAL OUTPUT ERROR
vs. SUPPLY VOLTAGE
MAX4173 toc05
SUPPLY VOLTAGE (V)
TOTAL OUTPUT ERROR (%)
MAX4173F
V
SENSE
= 6.25mV
MAX4173H
MAX4173T
-2
0
-1
2
1
3
4
0 10050 150 200
TOTAL OUTPUT ERROR vs.
FULL-SCALE SENSE VOLTAGE
MAX4173 toc06
V
SENSE
(mV)
TOTAL OUTPUT ERROR (%)
MAX4173F
V
CC
= 28V
MAX4173H
MAX4173T
-10
-8
-6
-4
-2
0
2
4
6
0105 15202530
TOTAL OUTPUT ERROR vs.
COMMON-MODE VOLTAGE
MAX4173 toc08
COMMON-MODE VOLTAGE (V)
TOTAL OUTPUT ERROR (%)
MAX4173F
MAX4173TMAX4173H
Typical Operating Characteristics
(V
CC
= +12V, V
RS+
= +12V, V
SENSE
= +100mV, T
A
= +25°C, unless otherwise noted.)
-1.2
-0.4
-0.8
0
0.4
0.8
1.2
-50 -20 -5 10-35 2540557085
GAIN ACCURACY vs. TEMPERATURE
MAX4173 toc09
TEMPERATURE (°C)
GAIN ACCURACY (%)
MAX4173F
MAX4173H
MAX4173T
4
Maxim Integrated
MAX4173