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LTC2995 데이터시트(PDF) 42 Page - Analog Devices

부품명 LTC2995
상세설명  Isolated High Accuracy Digital Temperature Measurement System with EEPROM
PDF  90 Pages
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제조업체  AD [Analog Devices]
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LTC2995 데이터시트(HTML) 42 Page - Analog Devices

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LTM2985
42
Rev. 0
For more information www.analog.com
Figure 13. 3-Wire RTD Channel Assignment Convention
Figure 14. 3-Wire Sense Resistor Channel Assignment
Convention for 3-Wire RTDs
2985 F13
3RD TERMINAL TIES TO SENSE RESISTOR
2
3
1
CHRTD-1
CHRSENSE
CHRTD
EXCITATION
CURRENT
FLOW
= CHRTD (2 ≤ RTD ≤ 10)
CHANNEL
ASSIGNMENT
2985 F14
CHRSENSE-1
CHRSENSE
RSENSE
2x EXCITATION
CURRENT
FLOW
= CHRSENSE (2 ≤ RSENSE ≤ 10)
(OPTIONAL GND, REMOVE FOR RSENSE SHARING)
CHANNEL
ASSIGNMENT
APPLICATIONS INFORMATION
Figure 15. 3-Wire RTD Example
RSENSE
12,150.39
2985 F15
0.01µF
RSENSE ASSIGNED TO CH7 (CHRSENSE=7)
3-WIRE RTD ASSIGNED TO CH9 (CHRTD=9)
CH7
CH6
CHANNEL ASSIGNMENT
MEMORY LOCATIONS 0x218 TO 0x21B
CHANNEL ASSIGNMENT
MEMORY LOCATIONS 0x220 TO 0x223
RESULT MEMORY LOCATIONS 0x030 TO 0x033
0.01µF
0.01µF
CH8
CH9
3-WIRE PT-200
2
3
1



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