REF2925AIDBZR

Overview

The REF2925AIDBZR is a CMOS series voltage reference from Texas Instruments, housed in a compact SOT-23-3 package. It provides a fixed output of 2.5 V with an initial accuracy of 2% and a temperature coefficient of 100 ppm/°C. The device operates within an input voltage range of 2.55 V to 5.5 V and supports a maximum shunt current of 25 mA. Quiescent current is typically 42 µA, with a maximum of 50 µA. It functions reliably across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• CMOS bandgap architecture designed for low power consumption
• Stable operation without requiring external load capacitors
• Low dropout voltage capability for efficient battery-powered systems

Applications

• Portable instrumentation and test equipment
• Battery-powered measurement devices
• Data acquisition systems requiring stable references

Procurement Notes

Verify the specific suffix 'DBZR' corresponds to the SOT-23-3 surface-mount package and reel packaging configuration. Confirm that the 2% initial accuracy and 100 ppm/°C drift specifications meet the design requirements, as tighter tolerances are available in other REF29xx variants. Ensure compatibility with the target operating temperature range of -40°C to +125°C.

Selection Notes

Select this component when a balance of moderate precision (2%) and ultra-low power (50 µA max) is required in a minimal footprint. It is suitable for applications where space constraints preclude larger packages but higher precision than the REF29xx family offers is unnecessary. Compare against REF30xx or REF33xx series if lower noise or tighter drift is critical.

Part Context

This part belongs to the REF29xx family of CMOS voltage references, which are characterized by their small size and low current draw. The REF2925 variant specifically targets the 2.5 V output requirement. It serves as a cost-effective solution for general-purpose analog circuits where extreme precision is not the primary driver, distinguishing it from the higher-precision REF30xx and REF33xx lines.

Replacement Considerations

Direct pin-compatible substitutes include REF2925AIDBZT (cut tape) and REF2925AIDBZRG4 (lead-free). For improved performance, consider REF3025AIDBZR for better accuracy or REF3325AIDBZR for lower drift, noting differences in quiescent current and price.