LT1025CN#PBF Linear Technology, LT1025CN#PBF Datasheet
LT1025CN#PBF
Specifications of LT1025CN#PBF
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LT1025CN#PBF Summary of contents
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... The amplifier from this kit is available separately as LTKA0x. The LT1025 is available in either an 8-pin PDIP or 8-pin SO package for temperatures between 0 C and LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO J 51 K,T 40 ...
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... K output with an LT1025A is 0.5 C plus (0.4 V/ C)(25 C)/ ( 0.75 C. Note 5: Temperature error is defined as the deviation from the following formula: V OUT term is a built-in nonlinearity designed to help compensate the nonlinearity of the cold junction . This “bow” is 0.34 C for temperature change ORDER PART TOP VIEW J ...
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... TEMPERATURE TO BE MEASURED = (T1 – T2 operate properly, a cold junction compensator must be at exactly the same temperature as the cold junction of the thermocouple (T2). Therefore important to locate the LT1025 physically close to the cold junction with local temperature gradients minimized. If this is not possible, LT1025 Supply Current ...
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... The four thermocouple outputs on the LT1025 are 60 (E), 51 (J), 40 and T), and and S). These particular coefficients are chosen to match the room temperature (25 C) slope of the thermocouples. Over wide temperature ranges, however, the slope of thermocouples changes, yielding a quasi- parabolic error compared to a constant slope. The LT1025 outputs have a deliberate parabolic “ ...
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... V/ C drift (even over the full military temperature range). Input bias current is 30pA, and gain is typically 30 million. These amplifiers should be used for R and S thermocouples, especially if no offset adjust- ments can be tolerated large ambient temperature swing is expected. Regardless of amplifier type suggested that for best V ...
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... Thermocouples are linear over relatively limited temperature spans if accuracies of better than 2 C are needed. The graph in Figure 4 shows thermocouple nonlinearity for the temperature range 400 C. Nonlinearities can be dealt with in hardware by using offsets, breakpoints, or power series generators. Software solutions include look-up tables, power series expansions, and piece-wise approximations ...
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... APPLICATIO S I FOR ATIO 3. Calibrate output by adding in a true offset term which does not affect gain (by summing, etc.). Calibration may be done at any temperature either by immersing the thermocouple in a calibrated bath or by substituting a precision input voltage. The method which tends to minimize worst-case error over the whole T ...
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... TYPE K *C1 AND C2 FILTER RIPPLE AND NOISE, BUT WILL LIMIT AC COMMON-MODE REJECTION IF NOT MATCHED. SUGGESTED VALUES ARE 0.001 F TO 0.1 F **USE LOWEST POSSIBLE SUPPLY VOLTAGE TO MINIMIZE INTERNAL TEMPERATURE RISE † FOR BEST ACCURACY, THERMOCOUPLE RESISTANCE SHOULD BE LESS THAN 100 †† ...
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... THIS AMPLIFIER HAS A DELIBERATE OFFSET TO ALLOW OUTPUT SLOPE (10mV SET INDEPENDENTLY FROM AN ARBITRARY HIGH TEMPERATURE CENTER POINT (1000 C). THIS IS REQUIRED BECAUSE THE SLOPE OF TYPE “S” THERMOCOUPLES VARIES RAPIDLY WITH TEMPERATURE, INCREASING FROM 1000 C. NONLINEARITY LIMITS ACCURACY OVER THE 800 C TO 1200 C RANGE EVEN WITH OFFSET CORRECTION R2** ...
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LT1025 PACKAGE DESCRIPTIO CORNER LEADS OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .300 BSC (7.62 BSC) .008 – .018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS Package ...
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... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... SELECTED FOR 200 C RANGE †† OR EQUIVALENT. SEE “AMPLIFIER CONSIDERATIONS” COMMENTS 120 V Max Max Max V OS www.linear.com FULL-SCALE ADJUST V OUT 10mV/ C LT1025 • TA07 , 280pA Max I OS 1V/ V Max VOL LT/TP 1103 1K REV B • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1988 1025fb ...