Datasheet

LTC6078/LTC6079
14
60789fa
TYPICAL APPLICATIO S
U
Precision Sample-and-Hold
Thermistor Amplifi er with Overtemperature Alarm
60789 TA12
V
OUT
T
OV
100k
100k
29.4k
100k
0.01µF
50k
178k
71.5k
A TO D: LTC6079, V
DD
= 2.7V TO 5.5V, V
SS
= GND
V
OUT
= 0 → 1V FOR 0°C TO 100°C, LINEAR
T
OV
→ HIGH WHEN T ≥ 90°C
YSI #44201
THERMOLINEAR
NETWORK
–
+
C
–
+
B
+
–
D
–
+
A
3200Ω
200k
H
6250Ω
B
V
DD
1k
LT1634
1.25V
GAIN TRIM
20k
143k
OFFSET TRIM
60789 TA13
V
OUT
V
IN
V
DD
0.1µF
9
6
I
SUPPLY
< 200µA
VOLTAGE DROOP = 130nV/ms TYP
SLEW RATE = 0.05V/ms TYP
ACQ TIME = 84µs TYP TO 0.1%
S/H
+
–
LTC6078
A
LTC6943
14
+
–
LTC6078
B
7
1
5
4