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LTC1531CSW Datasheet(PDF) 12 Page - Linear Technology

Part # LTC1531CSW
Description  Self-Powered Isolated Comparator
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1531CSW Datasheet(HTML) 12 Page - Linear Technology

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12
LTC1531
Figure 12. Over Temperature Detect
Figure 11. Isolated Thermocouple Voltage
TYPICAL APPLICATIONS
VTEMP
ISOGND
V1
V2
1531 F11
VALID
10k
GND
R1
1M
ISOLATION
BARRIER
33k
R3, 10M
10.2k
1M
2.5V
2.2
µF
LT1389
C1
0.22
µF
LTC1531
+
–
VPW
VPW
VPW
VCC
VCC
VCC
VCC
SHDN
CMPOUT
VREG
ZCDATA
ZCPOS ZCNEG
DATA
10k
10M
QD
R2
10M
0.1
µF
+
LT1490
+
LT1495
1.74M
1.21k
COLD JUNCTION COMPENSATES 0
°C TO 60°C
11.8k
K
THERM
30k
YSI44008
UNUSED OP AMP
TIED FOR MIN
CURRENT DRAIN
LT1495
VTEMP OUTPUT = 0V TO VCC
= 0
°C TO 200°C
RESOLUTION = 0.4mV OR 0.5
°C
RESPONSE TIME CONSTANT = 10sec
1
1
1
1
1
1
1
= ISOLATED GROUND
= EQUIPMENT GROUND
1
C2, 1
µF
Σ
Σ
V3
V4
VTRIP
ISOGND
V1
V2
1531 F12
VALID
GND
ISOLATION
BARRIER
33k
10M
10.2k
1M
2.5V
2.2
µF
LT1389
LTC1531
+
–
VPW
VPW
VCC
VCC
SHDN
CMPOUT
VREG
ZCDATA
ZCPOS ZCNEG
DATA
QD
0.1
µF
+
+
LT1495
1.74M
1.21k
COLD JUNCTION COMPENSATES 0
°C TO 60°C
VTRIP SWITCHES AT 100
°C, SET BY OP AMP GAIN
11.8k
K
THERM
30k
YSI44008
1
1
1
1
1
= ISOLATED GROUND
= EQUIPMENT GROUND
1
Σ
Σ
V3
V4
1
VPW
UNUSED OP AMP
TIED FOR MIN
CURRENT DRAIN
LT1495
1



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