REF5045AID

Overview

The REF5045AID is a precision series voltage reference manufactured by Texas Instruments, delivering a fixed output of 4.5 V. It features an initial accuracy of 0.05% and a temperature coefficient of 3 ppm/°C. The device operates with a maximum input voltage of 18 V and supports a maximum shunt current of 10 mA. Quiescent current consumption is 800 uA. It functions within a temperature range of -40°C to +125°C and is housed in an 8-pin SOIC package.

Feature Summary

• Provides low noise performance for sensitive signal chains
• Ensures very low drift characteristics over temperature variations
• Delivers high precision voltage regulation

Applications

• High-resolution data acquisition systems
• Precision instrumentation circuits
• Medical equipment requiring stable references

Procurement Notes

Verify the specific suffix (ID vs IDRG4) against the manufacturer's datasheet to confirm package type and tape/reel specifications. Ensure the ordering part number matches the required moisture sensitivity level and humidity handling requirements. Confirm that the SOIC-8 footprint aligns with the PCB design constraints before finalizing procurement.

Selection Notes

Select this component when a 4.5 V output is required with stringent drift and accuracy needs. Compare the 3 ppm/°C temperature coefficient against system thermal stability requirements. Evaluate the 800 uA quiescent current against power budget constraints. Verify compatibility with the 18 V maximum input voltage limit in the target application environment.

Part Context

This part belongs to the REF5045 family of low-noise, very low drift precision voltage references from Texas Instruments. The family includes variants with different output voltages and packaging options such as VSSOP. The REF5045AID specifically denotes the 4.5 V version in an 8-SOIC package, designed for applications demanding high stability and low noise performance.

Replacement Considerations

Compatible substitutes include REF5045AIDG4 and REF5045AIDR. Verify pinout compatibility and electrical parameter equivalence before substitution.