LTK001CN8#PBF

Sensor And Detector Interfaces Overview

The LTK001CN8#PBF is a thermocouple cold junction compensator and matched amplifier kit manufactured by Analog Devices Inc. It consists of an LT1025-based compensator and an LTKA0x amplifier housed in an 8-lead PDIP package. The device provides direct outputs for Type E, J, K, R, S, and T thermocouples with specific sensitivities ranging from 5.95µV/°C to 60.9µV/°C, alongside a universal 10mV/°C output. It operates on a single supply voltage between 5V and 20V with a typical supply current of 480µA. The A-version offers an initial accuracy of 0.75°C at 25°C, while the standard version has a maximum total temperature error of 2.5°C within the 0°C to 70°C operating range.

Sensor And Detector Interfaces Feature Summary

• Separates compensator and amplifier functions to eliminate compensator temperature rise issues
• Provides preset outputs for multiple thermocouple types including E, J, K, R, S, and T
• Features extremely low input bias currents allowing high impedance input filters
• Includes a universal 10mV/°C output scalable for arbitrary thermocouple matching

Sensor And Detector Interfaces Applications

• Type K 10mV/°C thermometer circuits
• High precision industrial temperature measurement systems
• Multiple thermocouple applications using a single shared compensator

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix CN8 corresponds to the 8-lead PDIP package and commercial temperature range. Confirm availability status as the datasheet indicates obsolete packages for other variants like MJ8. Ensure compatibility with the LT1025 compensator polarity requirements when sourcing replacement amplifiers separately.

Sensor And Detector Interfaces Selection Notes

Select the LTK001ACN8 variant if initial accuracy better than 0.75°C is required. Use the LTKA0x amplifier separately if multiple channels share one compensator unit. Consider the LT1050 or LTC1052 operational amplifiers if reducing the offset error for Type R and S thermocouples below 35µV is necessary.

Sensor And Detector Interfaces Part Context

This component belongs to the LT series of precision analog interface devices designed for sensor signal conditioning. It integrates a selected LT1025 cold junction compensator with a specially matched low-drift amplifier. The kit format ensures minimized worst-case error by separating components based on their initial room temperature error polarities.

Sensor And Detector Interfaces Replacement Considerations

LTK001ACN8

Sensor And Detector Interfaces FAQ

How does the LTK001 handle errors between the compensator and amplifier?

Matching is accomplished by separating compensators and amplifiers according to the polarity of their initial errors, eliminating the need to sum errors to find the worst-case scenario.

What is the purpose of the 10mV/°C output?

The 10mV/°C output allows the device to be scaled to match any arbitrary thermocouple type not covered by the direct preset outputs.

Why are separate amplifiers available for this kit?

Amplifiers (LTKA0x) may be ordered separately for multiple thermocouple applications that utilize a single compensator, while still remaining matched to that specific compensator.