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LT1025CS8 Datasheet(PDF) 8 Page - Linear Technology |
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LT1025CS8 Datasheet(HTML) 8 Page - Linear Technology |
8 / 12 page 8 LT1025 1025fb TYPICAL APPLICATIO S VOUT 10mV/ °C 0 °C TO 500°C R5 47k R1 1k 1% R7 15k R3 141k 1% R2 100 Ω R4 141k C1 0.1 µF GND LT1025 –15V – – + + 15V 6V 15V –15V R6 10k TYPE E 1 µF *SEE “REVERSING THE POLARITY OF THE 10mV/ °C OUTPUT” †† OR EQUIVALENT. SEE “AMPLIFIER CONSIDERATIONS” LTKA0x †† –10mV/ °C VIN VO Utilizing Negative LT1025 Drive to Accommodate Grounded Thermocouple* R6 7.5k 1% R7 500 FULL-SCALE TRIM 5V** V – V – V + GND VIN VO LT1025 R9 100k R5 3k – + TYPE K † –15V – + LTKA0x †† 10mV/ °C VOUT VCM 10mV/ °C C1* C2* R3 1M 0.1% R1 10k 0.1% R2 10k 0.1% R4 1M 0.1% R8 5k 1% = (V –)(10k) VOUT (MAX) *C1 AND C2 FILTER RIPPLE AND NOISE, BUT WILL LIMIT AC COMMON-MODE REJECTION IF NOT MATCHED. SUGGESTED VALUES ARE 0.001 µF TO 0.1µF **USE LOWEST POSSIBLE SUPPLY VOLTAGE TO MINIMIZE INTERNAL TEMPERATURE RISE † FOR BEST ACCURACY, THERMOCOUPLE RESISTANCE SHOULD BE LESS THAN 100 Ω †† OR EQUIVALENT. SEE “AMPLIFIER CONSIDERATIONS” Differential Thermocouple Amplifier |
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