REF5030AIDG4

Overview

The REF5030AIDG4 is a precision series voltage reference from the Texas Instruments REF50xx family, housed in an 8-pin VSSOP package. It provides a fixed output voltage of 3V with a standard-grade initial accuracy of ±0.1%. The device supports a maximum input voltage of 18V and operates within a temperature range of -40°C to +125°C. Key electrical specifications include a maximum temperature coefficient of 8ppm/°C, low-frequency noise of 3μVPP/V (0.1Hz to 10Hz), and a quiescent current of 1.2mA. It features a TRIM/NR pin for output adjustment or noise reduction.

Feature Summary

• Provides high-precision voltage referencing with excellent long-term stability and low flicker noise characteristics suitable for sensitive analog circuits.
• Features a dedicated temperature monitoring pin that outputs a voltage proportional to the junction temperature for system thermal management.
• Supports bidirectional current flow, allowing the device to both source and sink load currents up to 10mA while maintaining regulation.

Applications

• Precision data acquisition systems
• Semiconductor test equipment
• Industrial process controls
• Medical instrumentation
• Pressure and temperature transmitters

Procurement Notes

Verify the specific grade suffix 'AI' corresponds to the standard performance tier (±0.1% accuracy, 8ppm/°C drift) required for the design. Confirm the 'DGK' suffix indicates the 8-pin VSSOP package variant rather than the SOIC version. Ensure the procurement documentation matches the exact part number to avoid confusion with enhanced-grade alternatives like the REF5030EI which offer different electrical profiles.

Selection Notes

Select this component when a fixed 3V reference is needed with moderate drift requirements and a compact surface-mount footprint. The standard grade offers a balance of cost and performance for general-purpose applications where the enhanced grade's tighter tolerances are unnecessary. Consider the available TRIM/NR pin if fine-tuning the output voltage or reducing low-frequency noise is required for the specific application environment.

Part Context

This device belongs to the REF50xx family of low-noise, very low drift precision voltage references. The family includes enhanced, high, and standard grades, with the REF5030AIDG4 representing the standard grade option. It shares the same functional architecture as other REF50xx variants but is optimized for applications requiring ±0.1% accuracy and 8ppm/°C drift performance.

Replacement Considerations

REF5030AID

FAQ

What is the function of the TRIM/NR pin on the REF5030AIDG4?

The TRIM/NR pin serves a dual purpose: it allows for output voltage trimming to adjust the reference level and can be used for noise reduction by connecting a capacitor to lower the low-frequency flicker noise.

Does the REF5030AIDG4 support sinking current?

Yes, the device is capable of both sourcing and sinking current, with a maximum output current specification of ±10mA.