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LTC2995 Datasheet(PDF) 27 Page - Analog Devices

Part # LTC2995
Description  Isolated High Accuracy Digital Temperature Measurement System with EEPROM
PDF  90 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC2995 Datasheet(HTML) 27 Page - Analog Devices

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LTM2985
27
Rev. 0
For more information www.analog.com
Table 17. Cold Junction Channel Pointer
(2) COLD JUNCTION CHANNEL POINTER
B26
B25
B24
B23
B22
COLD JUNCTION CHANNEL
0
0
0
0
0
No Cold Junction
Compensation, 0°C Used for
Calculations
0
0
0
0
1
CH1
0
0
0
1
0
CH2
0
0
0
1
1
CH3
0
0
1
0
0
CH4
0
0
1
0
1
CH5
0
0
1
1
0
CH6
0
0
1
1
1
CH7
0
1
0
0
0
CH8
0
1
0
0
1
CH9
0
1
0
1
0
CH10
All Other Combinations
Invalid
Table 16. Thermocouple Type
(1) THERMOCOUPLE TYPE
B31 B30 B29
B28
B27
THERMOCOUPLE TYPES
0
0
0
0
1
Type J Thermocouple
0
0
0
1
0
Type K Thermocouple
0
0
0
1
1
Type E Thermocouple
0
0
1
0
0
Type N Thermocouple
0
0
1
0
1
Type R Thermocouple
0
0
1
1
0
Type S Thermocouple
0
0
1
1
1
Type T Thermocouple
0
1
0
0
0
Type B Thermocouple
0
1
0
0
1
Custom Thermocouple
Table 18. Sensor Configuration
(3) SENSOR CONFIGURATION
SGL
OC
CHECK
OC CURRENT
SINGLE-ENDED/
DIFFERENTIAL
OPEN-CIRCUIT
CURRENT
B21
B20
B19
B18
0
0
X
X
Differential
External
0
1
0
0
Differential
10µA
0
1
0
1
Differential
100µA
0
1
1
0
Differential
500µA
0
1
1
1
Differential
1mA
1
0
X
X
Single-Ended
External
1
1
0
0
Single-Ended
10µA
1
1
0
1
Single-Ended
100µA
1
1
1
0
Single-Ended
500µA
1
1
1
1
Single-Ended
1mA
Figure 7. Thermocouple Channel Assignment Convention
SINGLE-ENDED
+
–
+
–
= CHTC (1≤ TC ≤ 10)
COM
CHTC
0.1µF
CHANNEL
ASSIGNMENT
DIFFERENTIAL
2985 F07
= CHTC (2 ≤ TC ≤ 10)
CHTC
CHTC-1
0.1µF
CHANNEL
ASSIGNMENT
APPLICATIONS INFORMATION



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