REF3320AIDBZRG4

Overview

The REF3320AIDBZRG4 is a precision series voltage reference manufactured by Texas Instruments, delivering a fixed output of 2.048 V. It features an initial accuracy of 0.15% and a temperature coefficient of 30 ppm/°C. The device operates with a low quiescent current of 3.9 µA and supports a maximum input voltage of 5.5 V. It accommodates a maximum shunt current of 5 mA and functions within a temperature range of -40°C to +125°C. Packaged in a SOT-23-3 surface-mount case, it belongs to the REF3320 family.

Feature Summary

• Provides a stable 2.048 V reference output with high initial accuracy
• Ensures thermal stability through a low 30 ppm/°C temperature coefficient
• Optimizes power efficiency with ultra-low 3.9 µA operating current

Applications

• Precision analog-to-digital converter (ADC) reference inputs
• Digital-to-analog converter (DAC) voltage sources
• Battery-powered instrumentation requiring low power consumption

Procurement Notes

Verify the specific suffix 'G4' confirms RoHS compliance and lead-free manufacturing status as per Texas Instruments documentation. Confirm the package type matches the required SOT-23-3 footprint for PCB layout compatibility. Ensure the ordering part number aligns with the desired tape-and-reel or cut-tape packaging format specified in the official datasheet.

Selection Notes

Select this component when a fixed 2.048 V output is required with strict accuracy constraints. The low current draw makes it suitable for battery-operated systems where power conservation is critical. Verify that the 5.5 V maximum input voltage rating exceeds the system supply rails. Consider the 30 ppm/°C drift specification against the environmental temperature variations of the target application.

Part Context

This device is part of the Texas Instruments REF33xx family of precision voltage references. These components are designed for applications demanding high stability and low noise. The REF3320 variant specifically targets systems needing a 2.048 V rail, commonly used in data acquisition and industrial control circuits.

Replacement Considerations

The REF3320AIDBZR is the non-RoHS compliant equivalent within the same series. Other REF3320 variants with different output voltages or accuracies may serve as functional substitutes if electrical parameters align with design requirements.