REF5050IDR

Overview

The REF5050IDR is a precision series voltage reference from Texas Instruments, delivering a fixed 5 V output with an initial accuracy of ±0.05%. It operates within an input voltage range of 5.2 V to 18 V and supports a maximum load current of 10 mA while consuming only 800 µA of supply current. The device features a very low temperature coefficient of 3 ppm/°C and is housed in an 8-pin SOIC package. Designed for high stability, it functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Provides stable fixed voltage output with high initial accuracy
• Features ultra-low temperature drift for thermal stability
• Operates with minimal quiescent current consumption
• Supports wide input voltage ranges for flexible power designs

Applications

• High-resolution data acquisition systems
• Precision analog-to-digital converter references
• Medical instrumentation requiring stable bias voltages
• Industrial process control signal conditioning

Procurement Notes

Verify the specific suffix ID against the manufacturer datasheet to confirm pinout and package dimensions match your PCB footprint. Ensure the operating environment stays within the specified -40°C to +125°C range to maintain the guaranteed 3 ppm/°C drift performance. Confirm RoHS compliance status if required by your assembly regulations.

Selection Notes

Select this component when application requirements demand low noise and exceptional long-term stability over temperature variations. The 800 µA supply current makes it suitable for battery-powered or energy-efficient designs compared to higher current alternatives. Verify that the 10 mA output drive capability meets the load requirements of the downstream circuitry without exceeding thermal limits.

Part Context

This part belongs to the REF50xx family of low-noise, very low drift precision voltage references. The family offers various output voltages and accuracy grades, utilizing a bandgap architecture optimized for minimal temperature dependence. The REF5050 specifically targets applications needing a precise 5 V rail with superior tracking characteristics compared to standard commercial references.

Replacement Considerations

Check the REF5050ID for leaded packaging equivalents if through-hole mounting is required. Consider the REF5050AIDR for tighter ±0.1% accuracy specifications if available. Verify pin compatibility before substituting with other series references from different manufacturers.