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| ISL28005_14 Datasheet, PDF (11/15 Pages) Intersil Corporation – Micropower, Rail-to-Rail Input Current Sense Amplifier with Voltage Output | |||
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ISL28005
OPTIONAL
FILTER
CAPACITOR
IS
+
RS
-
RS+
VSENSE
RS-
OPTIONAL
TRANSIENT
PROTECTION
LOAD
I = 2.86µA
VSENSE
R1
gmHI
VCC
HIGH-SIDE
SENSING
VRS+ = 2V TO 28V
R2
+
1.35V
IMIRROR
-
Rf
R3
gmLO âVSENSE
R5
Rg
R4
GND
VCC = 2V to 28V
OUT
LOAD
FIGURE 26. HIGH-SIDE CURRENT DETECTION
OPTIONAL
FILTER
CAPACITOR
IS
+
RS
-
RS+
VSENSE
RS-
OPTIONAL
TRANSIENT
PROTECTION
I = 2.86µA
VSENSE
R1
gmHI
R2
1.35V
VCC
R3
gmLO
R4
VCC
VCC = 2V TO 28V
LOW-SIDE
SENSING
VRS+= 0V TO 28V
IMIRROR
+
-
Rf
R5
Rg
VSENSE
OUT
GND
FIGURE 27. LOW-SIDE CURRENT DETECTION
11
FN6973.5
October 24, 2013
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