Datasheet

  
   
SLOS018H − MAY 1988 − REVISED NOVEMBER 2004
22
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
To Inverter
Drive
5 V
100 kΩ
10 kΩ
†
68 kΩ
†
4.3 kΩ
5 V
LT1004
1.2 V
4 kΩ
†
2 kΩ
4-mA
Trim
IN
0 to 4 V
1 kΩ
20-mA
Trim
301 Ω
†
0.1 Ω
T1
10 µF
4 mA to 20 mA
Fully Floating
1N4002 (4)
1/2
LT1013
+
†
1% film resistor
+
−
+
−
1/2
LT1013
Figure 31. Fully Floating Modification to 4-mA to 20-mA Current-Loop Transmitter With 8-Bit Accuracy
IN+
IN+
IN−
IN−
6
18
7
13
11
12
14
R2
R1
OUT B
3
2
1 µF
5
6
5 V
OUT A
R2
R1
0.01 µF
1 µF
1 µF
1 µF
1/2
LT1013
1/2
LT1013
+
+
−
−
1
7
4
15
1/2 LTC1043
1/2 LTC1043
5
8
2
3
8
NOTE A: V
IO
= 150 µV, A
VD
= (R1/R2) + 1, CMRR = 120 dB, V
ICR
= 0 to 5 V
Figure 32. 5-V Single-Supply Dual Instrumentation Amplifier