Datasheet

15
LT1013/LT1014
10134fb
5V Powered 4mA–20mA Current Loop Transmitter
†
–
+
A2
1/2 LT1013
3
2
1
–
+
A1
1/2 LT1013
6
5
7
100k
4.3k
+5V
8
4
LT1004
1.2V
+5V
10µF
4mA-20mA OUT
FULLY FLOATING
8-BIT ACCURACY.
†
0.1Ω
68k*
301Ω*
1k
20mA
TRIM
4k*
10k*
2k
4mA
TRIM
INPUT
0V–4V
TO INVERTER
DRIVE
+
T1
1N4002 (4)
1013/14 TA14
Fully Floating Modification to 4mA-20mA Current Loop
†
–
+
A2
1/2 LT1013
6
5
7
–
+
A1
1/2 LT1013
2
3
1
INPUT
0 TO 4V
1k
4mA
TRIM
4k*
10k*
4.3k
+5V
8
4
LT1004
1.2V
2k
Q4
2N2222
100pF
+5V
0.33
100k
10k*
80k*
10k*
20mA
TRIM
10µF
Q1
2N2905
Q2
2N2905
10k
10k
0.002
820Ω
820Ω
10µF
+
100Ω*
4mA-20mA OUT
TO LOAD
2.2kΩ MAXIMUM
68Ω
Q3
2N2905
+5V
12-BIT ACCURACY.
1% FILM.
T1 = PICO-31080.
†
*
1N4002 (4)
T1
+
74C04
(6)
1013/14 TA13
TYPICAL APPLICATIO S
U