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