REF5045AIDG4

Overview

The REF5045AIDG4 is a precision series voltage reference from Texas Instruments, housed in an SOIC-8 surface-mount package. It provides a fixed output voltage of 4.5 V with an initial accuracy of ±0.05% and a temperature coefficient of 3 PPM/°C. The device operates within an input voltage range up to 18 V and supports a maximum shunt current of 10 mA. Quiescent current consumption is specified at 800 uA. It functions reliably across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Delivers high-precision voltage regulation with low drift characteristics suitable for demanding analog applications.
• Features low noise performance to maintain signal integrity in sensitive measurement circuits.
• Offers robust thermal stability over a wide operating temperature range.

Applications

• High-resolution data acquisition systems
• Precision instrumentation amplifiers
• Calibration equipment requiring stable reference voltages

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS status against the manufacturer's latest documentation. Confirm the SOIC-8 package dimensions and pinout match your PCB footprint requirements. Ensure the 4.5V output aligns with your system's reference needs. Check for any moisture sensitivity level (MSL) restrictions during storage and handling.

Selection Notes

Select this component when a fixed 4.5V reference with tight tolerance is required. Compare the 800 uA quiescent current against power budget constraints. Evaluate the 3 PPM/°C drift against long-term stability requirements. Consider the SOIC-8 package availability versus alternative packages like VSSOP if space is limited.

Part Context

This part belongs to the REF5045 family of precision voltage references designed for high-performance analog signal chains. It serves as a critical reference element in mixed-signal systems where accuracy and stability are paramount. The device integrates bandgap technology to achieve its specified performance metrics.

Replacement Considerations

The REF5045IDG4 is a documented equivalent variant within the same product family. Verify that the electrical specifications and package compatibility remain identical before substitution.