Datasheet

4 mA to 20 mA
CURRENT LOOP
R
SENSE
C1
V
S
+IN
-IN
+
-
Preamplifier
Output Buffer
Gain = K2
A1
A2
Gain = 10
OFFSET
Internal
Resistor
100 k:
OUT
Level
shift
1
5
3 4
7
8
LMP8601, LMP8601-Q1
SNOSAR2E –SEPTEMBER 2008–REVISED MARCH 2013 www.ti.com
CURRENT LOOP RECEIVER APPLICATION
Many industrial applications use 4 to 20 mA transmitters to send a sensor’s analog value to a central control
room. The LMP8601/LMP8601Q can be used as a current loop receiver as shown in Figure 45.
K2 = 2
Figure 45. Current Loop Receiver Application
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