REF5040IDRG4

Overview

The REF5040IDRG4 is a precision series voltage reference integrated circuit manufactured by Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.05%. The device operates within an input voltage range of 4.296 V to 18 V and delivers a maximum output current of 10 mA. Key performance metrics include a temperature coefficient of 3 ppm/°C, line regulation of 1 ppm/V, and load regulation of 50 ppm/mA. Low-frequency noise is specified at 12 µVpp from 0.1 Hz to 10 Hz. The component functions across an extended temperature range of -40°C to +125°C and is housed in an 8-SOIC surface-mount package.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial tolerance
• Exhibits very low drift characteristics suitable for sensitive analog circuits
• Features low-noise performance optimized for precision signal chains

Applications

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

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the package type matches the required PCB footprint for the 8-SOIC form factor. Ensure the operating environment stays within the specified -40°C to +125°C thermal limits. Check for any specific handling requirements related to moisture sensitivity level classification during storage and reflow soldering processes.

Selection Notes

Select this component when a stable 4.096 V reference is required with minimal temperature drift. The ±0.05% accuracy supports applications demanding high measurement fidelity. Consider the 10 mA output capability for driving moderate loads without external buffering. The wide input voltage range allows flexibility in power supply design compared to lower-voltage alternatives.

Part Context

This part belongs to the REF50xx family of precision voltage references designed for industrial and automotive-grade applications. It serves as a critical reference element in mixed-signal systems where long-term stability and low noise are paramount. The ID variant denotes industrial temperature rating specifications.

Replacement Considerations

REF5040IDR is the reel-pack equivalent of the same electrical specification. REF5040AIDGKT offers similar performance in a different VSSOP package format.