REF3012AIDBZTG4

Overview

The REF3012AIDBZTG4 is a CMOS series voltage reference manufactured by Texas Instruments, housed in an SOT-23-3 package. It provides a fixed output voltage of 1.25 V with an initial accuracy of ±0.2%. The device operates within an input voltage range of 1.8 V to 5.5 V and draws a maximum supply current of 50 µA. Key performance metrics include a temperature coefficient of 75 ppm/°C and a maximum shunt current of 25 mA. Noise specifications are 14 µVp-p from 0.1 Hz to 10 Hz and 42 µVrms from 10 Hz to 10 kHz. It functions reliably across a junction temperature range of -40°C to +125°C.

Feature Summary

• Provides a stable 1.25 V fixed output voltage suitable for precision analog circuits.
• Features low power consumption with a typical operating current of 42 µA.
• Delivers high precision with ±0.2% initial accuracy and low noise characteristics.

Applications

• Portable instrumentation requiring low power and high accuracy.
• Battery-powered measurement systems.
• Data acquisition systems needing precise voltage references.

Procurement Notes

Verify the 'G4' suffix indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the SOT-23-3 package type matches your PCB footprint requirements. Ensure the 1.25 V output aligns with your system's reference needs. Check for any specific handling precautions related to the surface-mount technology.

Selection Notes

Select this component when a compact, low-power voltage reference with 1.25 V output is required. The SOT-23-3 package offers space efficiency for portable designs. Consider the ±0.2% accuracy and 75 ppm/°C drift for applications demanding moderate precision. The low quiescent current makes it ideal for battery-operated devices where energy conservation is critical.

Part Context

This part belongs to the REF30xx family of CMOS voltage references from Texas Instruments. These devices are designed for applications requiring small size, low power, and good stability. The REF3012 variant specifically targets the 1.25 V output segment, complementing other voltages in the series like 2.5 V or 5 V options within the same product line.

Replacement Considerations

The REF3012AIDBZR is a compatible alternative without the G4 suffix, offering identical electrical specifications. Verify that the non-G4 version meets your environmental compliance requirements if necessary.