REF35125QDBVR

Overview

The REF35125QDBVR is a precision series voltage reference from Texas Instruments, delivering a fixed output of 1.25 V. It features an initial accuracy of 0.05% and a temperature coefficient of 12 ppm/°C. The device operates with a quiescent current of 650 nA and supports a maximum input voltage of 6 V. It accommodates a maximum shunt current of 10 mA and functions within a temperature range of -40°C to +125°C. Packaged in a SOT-23-6 surface-mount case, it belongs to the REF35 series.

Feature Summary

• Provides stable 1.25 V reference output with high initial accuracy
• Ultra-low quiescent current consumption for power efficiency
• Low temperature coefficient ensures stability across operating ranges
• Compact SOT-23-6 package suitable for space-constrained designs

Applications

• Precision analog-to-digital converter (ADC) references
• Data acquisition systems requiring stable voltage sources
• Industrial process control instrumentation
• Medical equipment signal conditioning circuits

Procurement Notes

Verify the specific suffix QDBVR against the manufacturer's official datasheet to confirm pinout and electrical specifications match your design requirements. Ensure compatibility with your PCB footprint and thermal management strategy. Confirm RoHS compliance status through the latest product change notifications or official documentation before finalizing procurement decisions.

Selection Notes

Select this component when a low-drift, low-power voltage reference is required for precision measurement applications. The 1.25 V output is suitable for driving ADCs directly. Consider the 12 ppm/°C drift specification against your system's thermal environment. The SOT-23-6 package offers a compact solution compared to larger packages, provided thermal dissipation remains within limits for the 10 mA shunt current capability.

Part Context

This part belongs to the REF35 family of precision voltage references from Texas Instruments. The family includes various output voltages and packages, sharing common architectural features such as low noise and high stability. The REF35125 variant specifically targets applications needing a 1.25 V reference point, often used in bridge sensor interfaces and portable instrumentation where battery life and accuracy are critical constraints.

Replacement Considerations

The REF35125QDBVRQ1 is an automotive-grade alternative within the same series, offering similar electrical characteristics but qualified for automotive environments. Verify if automotive reliability standards are required for your application. Other REF35 variants with different output voltages may serve as functional substitutes if the voltage level can be adjusted or if multiple references are needed.