LT1025-Micropower Thermocouple

lt1025描述
the lt™1025 is a micropower thermocouple cold junction compensator for use with type e, j, k, r, s, and t thermocouples. it utilizes wafer level and post-package trimming to achieve 0.5°c initial accuracy. special curvature correction circuitry is used to match the �bow� found in all thermocouples so that accurate cold junction compensation is maintained over a wider temperature range.
the lt1025 will operate with a supply voltage from 4v to 36v. typical supply current is 80µa, resulting in less than 0.1°c internal temperature rise for supply voltages under 10v. a 10mv/°c output is available at low impedance, in addition to the direct thermocouple voltages of 60.9µv/°c (e), 51.7µv/°c (j), 40.3µv/°c (k, t) and 5.95µv/°c (r, s). all outputs are essentially independent of power supply voltage.
a special kit is available (ltk001) which contains an lt1025 and a custom tailored thermocouple amplifier. the amplifier and compensator are matched to allow a much tighter specification of temperature error than would be obtained by adding the compensator and amplifier errors on a worst-case basis. 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 70°c.
lt1025特点
80µa supply current
4v to 36v operation
0.5°c initial accuracy (a version)
compatible with standard thermocouples (e, j, k, r, s, t)
auxiliary 10mv/°c output
available in 8-lead pdip and so packages
typical application
lt1025封装
so-8, dip-8
lt1025应用
thermocouple cold junction compensator
centigrade thermometer
temperature compensation network