REF5030AQDRQ1

Overview

The REF5030AQDRQ1 is an automotive-grade precision series voltage reference from the Texas Instruments REF50xx family. It provides a fixed 3V output with high accuracy and low drift. The device operates within a supply voltage range of VOUT + 0.2V to 42V, supporting a maximum output current of ±10mA. Key electrical specifications include a temperature coefficient of 2.5ppm/°C, initial accuracy of ±0.025%, and low-frequency noise of 0.5μVPP/V. It functions reliably across an ambient temperature range of -40°C to 125°C.

Feature Summary

• Enhanced performance grade delivering 2.5ppm/°C temperature drift and ±0.025% initial accuracy for high-precision applications.
• Wide input voltage support up to 42V enables operation in systems with significant supply variations.
• Low flicker noise specification of 0.5μVPP/V ensures signal integrity in sensitive data acquisition paths.
• Integrated enable control pin allows for power management through active mode and shutdown state transitions.

Applications

• Automotive precision data acquisition systems
• Semiconductor test equipment requiring stable references
• Industrial process controls and instrumentation
• Medical instrumentation and diagnostic devices

Procurement Notes

Verify that the specific suffix 'QDRQ1' corresponds to the automotive qualification and tape-and-reel packaging configuration required for your assembly line. Confirm the package type matches the footprint design, as the REF50xx family includes both SOIC and VSSOP options. Ensure the selected grade meets the strict drift and accuracy tolerances mandated by the target application's technical specifications before finalizing procurement.

Selection Notes

Select this component when the application demands enhanced-grade performance with superior drift characteristics compared to standard or high-grade alternatives. The wide input voltage capability makes it suitable for noisy or variable automotive power environments. Consider the integrated enable feature if system-level power conservation is necessary. Verify that the thermal resistance metrics align with the PCB layout and enclosure constraints to maintain reliability under continuous operation.

Part Context

This part belongs to the REF50xx family of low-noise, very low drift precision voltage references manufactured by Texas Instruments. The family encompasses multiple grades (Standard, High, Enhanced) and output voltages, all sharing similar architectural features. The REF5030 variant specifically targets the 3V reference requirement, commonly used in ADC/DAC interfaces and sensor biasing circuits within industrial and automotive sectors.

Replacement Considerations

Direct substitutes within the same family include REF5030EI (standard package) or REF5030EIDR (tape and reel). For non-automotive applications, REF5030EID may be considered if AEC-Q100 qualification is not required. Cross-family replacements require careful evaluation of noise, drift, and pinout compatibility.