REF5025SHKJ

Overview

The REF5025SHKJ is a high-temperature, low-noise, very low-drift precision voltage reference manufactured by Texas Instruments. It provides a fixed output of 2.5 V with an initial accuracy of ±0.9%. The device operates within an extended temperature range from -55°C to +210°C and features a maximum temperature coefficient of 40 ppm/°C. It supports a maximum input voltage of 18 V and delivers a maximum shunt current of 7 mA. The unit consumes 1.5 mA of supply current and is housed in an 8-CSOIC package.

Feature Summary

• Capable of both sourcing and sinking current for robust line and load regulation
• Designed for extreme environments with operation up to +210°C
• Utilizes proprietary design techniques to achieve excellent temperature drift characteristics

Applications

• High-precision data acquisition systems
• ATE equipment
• Industrial process control
• Medical instrumentation
• Optical control systems

Procurement Notes

Verify the specific suffix HKJ against official documentation to confirm the package type and temperature rating. Ensure the application environment does not exceed the specified +210°C limit. Confirm that the 7 mA output current meets the load requirements. Check for moisture sensitivity levels if standard surface mount handling applies. Validate RoHS compliance status through the manufacturer's latest release notes.

Selection Notes

Select this component when standard industrial references fail under extreme thermal stress. The wide operating range makes it suitable for aerospace or downhole applications. Compare the 40 ppm/°C drift against tighter requirements where lower drift variants may be necessary. Consider the 7 mA output capability for driving moderate loads without external amplification.

Part Context

This part belongs to the REF50xx family of precision voltage references known for low noise and stability. The SHKJ variant specifically targets high-temperature reliability, distinguishing it from standard commercial grade parts. It shares architectural similarities with other members but offers enhanced thermal endurance.

Replacement Considerations

Direct substitutes include REF5025SHKQ and REF5025SKGD1. Verify pinout compatibility and ensure the alternative meets the -55°C to +210°C temperature specification.