MAX4172
Low-Cost, Precision, High-Side
Current-Sense Amplifier
____________________________Typical Operating Characteristics (continued)
(V+ = +12V, VRS+ = 12V, ROUT = 1kΩ, TA = +25°C, unless otherwise noted.)
ERROR vs. SENSE VOLTAGE
40
35
30
25
20
15
10
5
0
-5
0.1m
1m
10m
100m
1
VSENSE (V)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
35
VSENSE = 100mV
30
25
20
15
10
5
0
0.01
0.5VP-P
1.0VP-P
5mVP-P
0.1
1
10 100 1000
POWER-SUPPLY FREQUENCY (kHz)
OUTPUT ERROR
vs. COMMON-MODE VOLTAGE
0.75
VSENSE = 100mV
0.55
0.35
0.15
TA = -40°C
-0.05
-0.25
TA = +25°C
TA = +85°C
-0.45
-0.65
06
12 18 24
VRS- (V)
30 40
V+ THRESHOLD FOR PG OUTPUT LOW
vs. TEMPERATURE
2.95
2.90
2.85
2.80
V+ RISING VOLTAGE
2.75
2.70
2.65
2.60
V+ FALLING VOLTAGE
2.55
2.50
2.45
-40 -15
10
35
60
85
TEMPERATURE (°C)
0 to 10mV VSENSE TRANSIENT RESPONSE
MAX4172-08
0 to 100mV VSENSE TRANSIENT RESPONSE
MAX4172-09
VSENSE
5mV/div
GND
VSENSE
50mV/div
GND
VOUT
50mV/div
GND
4
10µs/div
VOUT
500mV/div
GND
10µs/div
Maxim Integrated