LTK001中文资料Thermocouple Cold Junction Compensator and Matched Amplifier数据手册ADI规格书

描述 Description

The compensator is a selected version of the LT1025 cold junction compensator. The amplifier, which is also available separately as LTKA0X has been specially selected for thermocouple applications. It has low supply current to minimize warmup drift, very low offset voltage (<35µV), high gain, and extremely low input bias currents (<600pA) to allow high impedance input filters to be used without degrading offset voltage or drift. Matching of the kits is accomplished by separating the compensators and amplifiers according to the polarity of their inital (room temperature) errors. This eliminates the need to sum the errors of the two components to find the worst-case error. The LTK001 has direct thermocouple outputs of 60.9µV/°C (E) 51.7µV/°C (J), 40.6µV/°C (K,T), and 5.95µV/°C (R,S). It also has a 10mV/°C output which can be scaled to match any arbitrary thermocouple. The amplifier in the LTK001 kit is available in an 8-pin plastic miniDIP for 0°C to 70°C operation and an 8-pin TO-39 metal can for -55°C to +125°C operation. The compensator is available in 8-pin plastic miniDIP for 0°C to 70°C operation and 8-pin ceramic miniDIP for -55¯C to +125°C operation. For multiple thermocouple applications using one compensator, amplifiers may be ordered separately (LTKAOx), still matched to the compensator. For typical performance curves and all applications circuits consult the LT1025 data sheet.

特性 Features

• 0.75°C 初始准确度 (A 版本)
• 针对 E、J、K、R、S、T 型热电偶的预设输出
• 480µA 典型电源电流
• 采用 8 引脚 DIP 封装

应用 Application

• 热电偶冷结点补偿

简介

LTK001属于集成电路（IC）的传感器检测器接口。由ADI制造生产的LTK001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。