High-Side Power and
Current Monitors
V CC
MAX4210D/E/F
RS+
R 2
RS-
IN
POUT
OUTPUT
V OUTPUT = V INPUT ?
(R 2 /R 1 ) ? A VPOUT ? V IN
INPUT
V IN
GAIN CONTROL
(0 TO 1V)
R 1
Figure 3. Single-Ended-Input, Variable-Gain Amplifier
+
V SENSE
-
4V TO
28V
+
-
R SENSE
RS+
V CC
+
2.7V TO
-
5.5V
MAX4210D/E/F
MAX4211D/E/F
POUT
GND
Figure 4. Load-Power Measurement with External Voltage-Divider
RS-
IN
LOAD
______________________________________________________________________________________
25
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