Datasheet

17
LT1078/LT1079
10789fe
TYPICAL APPLICATIONS
U
Platinum RTD Signal Conditioner with Curvature Correction
–
+
3
2
1
8
4
1/2 LT1078
LT1004-1.2
–
+
6
5
7
1/2 LT1078
13k*
12.3k*
1k**
1k**
1k**
R
P
1k AT
0°C
43.2k**
1.21M*
(SELECT AT 110°C)
5k
220°C
TRIM
1μF
10k*
50k
5°C
TRIM
1μF
0.02V TO 2.2V
OUT
=
2°C TO 220°C ±0.1°C
3V (LITHIUM)
R
P
**
*
= ROSEMOUNT 118MF
= TRW MAR-6 0.1%
= 1% METAL FILM
LT1078/79 • TA14
Lead-Acid Low-Battery Detector with System Shutdown
–
+
–
+
2
3
1
6
5
7
8
4
1/2 LT1078
1/2 LT1078
2M
1%
2M
1%
255k
1%
280k
1%
910k
5%
LT1004-1.2
LO = BATTERY LOW
(IF V
S
< 10.90V)
LO = SYSTEM SHUTDOWN
(IF V
S
< 10.05V)
BATTERY
OUTPUT
LT1078/79 • TA13
TOTAL SUPPLY CURRENT = 105μA
12V