REF3012TB-GT3

Overview

The REF3012TB-GT3 is a high precision, low drift CMOS voltage reference providing a nominal output of 1.25 V with ±0.2% accuracy. It operates within a supply range of 2.7 V to 5.5 V and delivers up to 10 mA sourced or sunk load current. The device features a maximum temperature drift of 50 ppm/°C over the -40°C to +85°C range and maintains a quiescent current of 30 µA. Packaged in a space-saving SOT-23-3 (CASE 527AG) format, it typically requires no output bypass capacitor.

Feature Summary

• High accuracy with ±0.2% initial tolerance
• Low temperature drift of 50 ppm/°C max
• Capable of sourcing or sinking 10 mA load current
• Space-saving SOT-23 three-lead package

Applications

• Battery powered systems
• A/D and D/A converters
• Precision regulator systems
• Portable medical equipment

Procurement Notes

Verify the specific ordering suffix TBGT3 against official documentation to confirm the SOT-23 tape and reel packaging configuration. Ensure compatibility with RoHS, Halogen-free, and BFR-free requirements for your assembly process. Cross-reference the marking code S3YM on the component body to validate authenticity and production year. Confirm that the 1.25 V output matches your circuit design needs before procurement.

Selection Notes

Select this component when a stable 1.25 V reference is required with minimal temperature sensitivity. It is suitable for applications needing both source and sink capabilities up to 10 mA. Consider its low quiescent current for battery-operated designs. Verify that the SOT-23 footprint fits your PCB layout constraints. Ensure input voltage remains between 2.7 V and 5.5 V for proper regulation.

Part Context

This part belongs to the REF30xx family of CMOS voltage references from ON Semiconductor. The family includes variants with outputs ranging from 1.25 V to 4.096 V. All members share similar electrical characteristics, including low drift and high accuracy. The REF3012 specifically provides the lowest voltage option in this series, ideal for low-voltage reference applications.

Replacement Considerations

Compatible parts include REF3020, REF3025, REF3030, REF3033, and REF3040 from the same family. These share identical pinouts and packages but offer different nominal output voltages. Ensure the replacement voltage matches your system requirements. Other manufacturers' 1.25 V references may require verification of pinout and electrical specifications.