Datasheet

10
®
RCV420
301Ω
301Ω
0-20mA
Input
75Ω
75Ω
1
2
3
16 4
+15V –15V
100kΩ
RCV420
13
1.01kΩ
5
11.5kΩ
92kΩ99kΩ300kΩ
300kΩ
10
11
14
15
12
V
O
0-5V
10.0V
Ref
1
2
12
15
14
10
11
75Ω
75Ω
300kΩ 99kΩ
10.0V
Reference
1.01kΩ
RCV420
V
0–5V
OUT
13 5
16 4
–15V+15V
LM193
1.27kΩ
10kΩ
604Ω
6.95V
Underrange
Output
Overrange
Output
1MΩ
10kΩ 10kΩ
3
10.0V
10kΩ
+15V
2N3904
22.9kΩ
10kΩ
0.57V
8
4
4–20mA
Input
+5V
AT&T
LH1191
Solid-State
Relay
555
Timer
8
4
3
1
2
5
1µF 0.01µF
1µF
7
6
470Ω 47kΩ
92kΩ
11.5kΩ
300kΩ
100kΩ
FIGURE 14. 4-20mA Current Loop Receiver with Input Overload Protection.
See Application Bulletin AB-014 for more details.
FIGURE 15. 0-20mA/0-5V Receiver Using RCV420.
See Application Bulletin AB-018 for more details.