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