LTC1042 查看數據表（PDF） - Linear Technology
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LTC1042 Datasheet PDF : 8 Pages
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LTC1042
APPLICATIO S I FOR ATIO
25k
LT1004-2.5
TTL Power Supply Monitor
TTL SUPPLY
V+
V+
10k
± 0.25%
1
8
100k
2
7
3 LTC1042 6
4
5
10k
± 0.25%
“HI” = SUPPLY IN
RANGE
100k
(4.5 < V+ < 5.5)
“HI” = ABOVE RANGE
(V+ > 5.5V)
R2*
10k
ALL RESISTORS ± 5% UNLESS OTHERWISE NOTED
*SUPPLY TOLERANCE EQUALS R2 IN kΩ. I.E., 10k = ±10%
LTC1042 • AI03
Single 5V Thermocouple Over Temperature Alarm
COLD JUNCTION COMPENSATOR
5V
36k ± 5%
TTL SUPPLY
V+
1690Ω
LT1034-1.2
187Ω
R4
5k AT 25°C†
4
1/2 LTC1043
7
8
1820Ω
11
1µF
12
13
14
THERMOCOUPLE TYPE R4
J
232k
K
301k
T
301k
S
2.1M
+
VT
–
16
17
0.0047µF
1k
R1**
3
7
( ) VT
1+
RF
RI
1
8
TEMPERATURE
IN WINDOW
6
LTC1052N8
2
8
1µF
4
1
0.1µF
0.1µF
RF**
CF*
R2**
2
3 LTC1042
4
7
6 100k ±5%
5
TEMPERATURE
HIGH
RI*
R3**
LTC1042 • A104
1.235 • (R2 + R3)
VCENTER = R1 + R2 + R3
1.235 • R3
WIDTH = 2 •
R1 + R2 + R3
†YELLOW SPRINGS INST. CO. P/N 44007
* CHOOSE CF TO FILTER NOISE
** CHOOSE RF, RI, R1, R2 AND R3 TO SET WINDOW
ALL RESISTORS ±1% UNLESS OTHERWISE NOTED
1042fa
6
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