REF5045IDR

Overview

The REF5045IDR is a precision series voltage reference integrated circuit manufactured by Texas Instruments. It provides a fixed output voltage of 4.5 V with an initial accuracy of ±0.05%. The device features a low temperature coefficient of 3 ppm/°C and operates within an input voltage range of 4.7 V to 18 V. It draws a supply current of 800 µA and supports a maximum load current of 10 mA. The component is housed in an 8-pin SOIC package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Delivers high-precision voltage regulation with tight initial accuracy tolerances for critical measurement applications.
• Maintains stable output performance over wide temperature variations through a low drift characteristic.
• Operates efficiently with minimal power consumption suitable for battery-powered or energy-constrained systems.

Applications

• High-resolution data acquisition systems requiring stable reference sources
• Precision analog-to-digital converter (ADC) front-end circuits
• Industrial process control instrumentation

Procurement Notes

Verify the specific suffix ID against official datasheets to confirm the SOIC-8 package type and industrial temperature grade. Ensure compatibility with standard surface-mount assembly processes. Confirm RoHS compliance status as per the latest manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 4.5 V output is required with stringent accuracy and stability needs. Compare against other REF50xx variants if different voltage levels or package constraints apply. Consider the 10 mA drive capability for direct loading requirements without additional buffering stages.

Part Context

This part belongs to the REF50xx family of precision voltage references from Texas Instruments. The family offers various fixed output voltages and accuracies, catering to diverse industrial and scientific applications. The REF5045 specifically targets applications needing a 4.5 V rail with high long-term stability.

Replacement Considerations

REF5045ID: Tube-packaged version of the same electrical specification. REF5045AIDR: Higher accuracy variant with ±0.01% tolerance. REF5040IDR: Alternative voltage level at 4.096 V with identical package and performance characteristics.