LT1025CN8#PBF

Sensor And Detector Interfaces Overview

The LT1025CN8#PBF is a micropower thermocouple cold junction compensator manufactured by Analog Devices Inc. It provides accurate compensation for Type E, J, K, R, S, and T thermocouples. The device operates with a supply voltage ranging from 4V to 36V and draws a typical supply current of 80mA. It features an auxiliary 10mV/°C output and direct thermocouple voltage outputs scaled to match specific Seebeck coefficients. The component utilizes wafer-level and post-package trimming to achieve an initial accuracy of 0.5°C (LT1025A version) or 2.0°C (standard version). It includes special curvature correction circuitry to compensate for the nonlinearity found in standard thermocouples.

Sensor And Detector Interfaces Feature Summary

• Provides integrated cold junction compensation for multiple thermocouple types including E, J, K, R, S, and T.
• Features built-in curvature correction circuitry to maintain accuracy over wider temperature ranges.
• Offers low-impedance auxiliary 10mV/°C output alongside direct thermocouple voltage scaling.
• Operates on a single positive supply voltage within a wide range of 4V to 36V.

Sensor And Detector Interfaces Applications

• Thermocouple cold junction compensation in industrial measurement systems
• Centigrade thermometer circuits requiring high accuracy
• Temperature compensation networks for precision thermal monitoring

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix CN8 corresponds to the 8-lead PDIP package when sourcing. Confirm the temperature grade matches the application requirements, as commercial grades are limited to 0°C to 70°C. Ensure the ordering information aligns with the required accuracy class, distinguishing between the standard LT1025 and the higher precision LT1025A variant.

Sensor And Detector Interfaces Selection Notes

Select the LT1025CN8#PBF for applications requiring through-hole mounting and operation within the commercial temperature range. Consider the LT1025ACN8 if tighter initial accuracy specifications are necessary. Evaluate the need for external pull-down resistors if negative temperature measurements below 0°C are required. Verify that the system layout minimizes thermal gradients near the device to ensure optimal performance.

Sensor And Detector Interfaces Part Context

The LT1025 series serves as a specialized interface component for thermocouple-based temperature sensing. It bridges the gap between raw thermocouple signals and amplification stages by providing necessary cold junction compensation. This integration simplifies circuit design by eliminating the need for discrete compensation components, ensuring consistent accuracy across various thermocouple types.

Sensor And Detector Interfaces Replacement Considerations

Consult manufacturer documentation for alternate source availability for the N8 package. No direct cross-model substitutes are confirmed in the provided data.