LT1025中文资料Micropower Thermocouple Cold Junction Compensator数据手册ADI规格书

描述 Description

The LT™1025 is a micropower thermocouple cold junctioncompensator for use with type E, J, K, R, S, and Tthermocouples. It utilizes wafer level and post-packagetrimming to achieve 0.5°C initial accuracy. Special curvaturecorrection circuitry is used to match the �bow� found in allthermocouples so that accurate cold junction compensationis 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°Cinternal temperature rise for supply voltages under 10V.A 10mV/°C output is available at low impedance, in additionto the direct thermocouple voltages of 60.9µV/°C (E),51.7µV/°C (J), 40.3µV/°C (K, T) and 5.95µV/°C (R, S). Alloutputs are essentially independent of power supply voltage.
A special kit is available (LTK001) which contains an LT1025and a custom tailored thermocouple amplifier. The amplifierand compensator are matched to allow a much tighter specificationof temperature error than would be obtained by addingthe 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 SOpackage for temperatures between 0°C and 70°C.

特性 Features

• 80µA 电源电流
• 4V 至 36V 工作电压范围
• 0.5°C 初始准确度 (A 版本)
• 可兼容标准热电偶 (E、J、K、R、S、T)
• 辅助的 10mV/°C 输出
• 采用 8 引脚 PDIP 封装和 SO 封装

应用 Application

• 热电偶冷结点补偿器
• 摄氏温度计
• 温度补偿网络

简介

LT1025属于集成电路（IC）的传感器检测器接口。由ADI制造生产的LT1025传感器和检测器接口该系列产品可执行信号调节、数据转换、激励生成和/或各种将传感器或变送器机构连接到主机设备所需的其他功能。示例包括用于 CCD 图像传感器的控制器、用于 4-20 mA 接口和类似应用的电流变送器、超声变送器前端、惠斯通电桥接口等。