REF1112AIDBZT

Overview

The REF1112AIDBZT is a precision shunt voltage reference manufactured by Texas Instruments, delivering a fixed output of 1.25 V. It features an initial accuracy of 0.2% and a low temperature coefficient of 10 ppm/°C. The device operates with a quiescent current of 1 µA and supports a wide input voltage range up to 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 compact SOT-23-3 surface-mount format, it is designed for high-precision applications requiring minimal power consumption.

Feature Summary

• Ultra-low quiescent current consumption of 1 µA for battery-powered efficiency
• High precision with 0.2% initial accuracy and 10 ppm/°C temperature drift
• Wide operating current range from 1 µA to 5 mA
• Compact SOT-23-3 package suitable for space-constrained designs

Applications

• Portable instrumentation systems
• Battery-operated measurement devices
• Precision data acquisition systems
• Medical equipment requiring stable references

Procurement Notes

Verify the specific suffix 'AIDBZT' against the manufacturer's latest datasheet to confirm pinout compatibility and thermal characteristics. Ensure the ordering code matches the required tolerance grade and packaging type. Cross-reference with official Texas Instruments documentation to validate RoHS compliance status and any recent product change notices affecting this specific part number before finalizing procurement.

Selection Notes

Select the REF1112AIDBZT when ultra-low power consumption is critical alongside high precision. It is suitable for applications where supply current must remain in the microampere range while maintaining strict accuracy requirements. Consider the SOT-23-3 package constraints for thermal management and board space. Compare against higher current alternatives if load requirements exceed 5 mA or if lower cost is prioritized over precision.

Part Context

This component belongs to the REF1112 series of shunt voltage references from Texas Instruments, formerly Burr-Brown. It is engineered for applications demanding exceptional stability and low power usage. The series is characterized by its ability to maintain accuracy across a wide temperature range and current spectrum, making it a standard choice for high-performance analog circuits in industrial and scientific instruments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.