LT1025MJ8 Linear Technology, LT1025MJ8 Datasheet - Page 8
LT1025MJ8
Manufacturer Part Number
LT1025MJ8
Description
Manufacturer
Linear Technology
Datasheet
1.LT1025MJ8.pdf
(12 pages)
Specifications of LT1025MJ8
Operating Temperature Classification
Military
Operating Temperature (max)
125C
Rad Hardened
No
Lead Free Status / RoHS Status
Not Compliant
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LT1025
TYPICAL APPLICATIO S
8
Utilizing Negative LT1025 Drive to Accommodate Grounded Thermocouple*
*C1 AND C2 FILTER RIPPLE AND NOISE, BUT WILL LIMIT AC COMMON-MODE REJECTION
**USE LOWEST POSSIBLE SUPPLY VOLTAGE TO MINIMIZE INTERNAL TEMPERATURE RISE
†
††
IF NOT MATCHED. SUGGESTED VALUES ARE 0.001 F TO 0.1 F
FOR BEST ACCURACY, THERMOCOUPLE RESISTANCE SHOULD BE LESS THAN 100
OR EQUIVALENT. SEE “AMPLIFIER CONSIDERATIONS”
6V
TYPE K
U
V
CM
–
†
–
47k
R5
TYPE E
–15V
*SEE “REVERSING THE POLARITY OF THE 10mV/ C OUTPUT”
††
GND
+
LT1025
OR EQUIVALENT. SEE “AMPLIFIER CONSIDERATIONS”
Differential Thermocouple Amplifier
LT1025
15V
+
V
GND
5V**
V
IN
141k
IN
–10mV/ C
1 F
R4
10k
0.1%
R7
15k
R6
0.1%
10k
R2
10k
R1
V
V
O
O
0.1%
1M
R4
–15V
V
+
–
–
LTKA0x
R5
3k
R9
100k
–15V
0.1%
15V
1M
R3
+
–
=
LTKA0x
C2*
††
V
10mV/ C
(V
OUT
C1*
–
V
V
)(10k)
+
(MAX)
††
–
C1
0.1 F
1%
R1
1k
7.5k
1%
1%
R6
R8
5k
R2
100
R3
141k
1%
R7
500
FULL-SCALE
TRIM
10mV/ C
0 C TO 500 C
V
OUT
V
10mV/ C
OUT
1025fb