REF3225AIDBVR

Overview

The REF3225AIDBVR is a fixed-output series voltage reference IC manufactured by Texas Instruments. It provides a stable 2.5V output with an initial accuracy of ±0.2%. The device operates within an input voltage range of 2.55V to 5.5V and draws a supply current of 135µA. It features low noise characteristics, specified as 33µVp-p from 0.1Hz to 10Hz and 48µVrms from 10Hz to 10kHz. The component supports a maximum output current of 10mA and maintains a temperature coefficient of 20ppm/°C. It is housed in a SOT-23-6 surface-mount package and functions reliably across a junction temperature range of -40°C to 125°C.

Feature Summary

• Provides a precise 2.5V fixed output with high initial accuracy for demanding analog circuits.
• Delivers low-noise performance suitable for sensitive signal processing applications.
• Operates efficiently with low quiescent current consumption.
• Ensures long-term stability with a low temperature coefficient over the industrial temperature range.

Applications

• Data acquisition systems requiring stable reference voltages
• Industrial process control instrumentation
• Portable battery-powered measurement devices

Procurement Notes

Verify the specific suffix 'DBVR' to confirm the SOT-23-6 package and tape-and-reel packaging format. Confirm that the 'A' grade designation matches the required ±0.2% accuracy specification for your design. Check the manufacturer's lifecycle status, as this part may be marked as Not Recommended for New Designs (NRND). Ensure compatibility with RoHS3 compliance requirements if applicable to your region.

Selection Notes

Select this component when a compact SOT-23-6 footprint is required alongside moderate precision and low power consumption. Compare against the REF3425 series if higher accuracy or lower drift is needed, noting the trade-off in cost and complexity. Consider the REF3325 series if a smaller SOT-23-3 package is acceptable and lower current draw is prioritized over output drive capability. Evaluate the input voltage headroom to ensure it remains above the minimum dropout requirement.

Part Context

This device belongs to the REF32xx family of precision voltage references from Texas Instruments. It shares the same pinout and general functionality with other variants in the series, such as the REF3230 and REF3233, which offer different fixed output voltages. The REF3225 specifically targets applications needing a 2.5V rail. It serves as a foundational component for creating accurate analog front ends in mixed-signal systems.

Replacement Considerations

Public documentation lists the REF3425IDBVR as a potential alternative within the same package, though it offers higher precision. Verify pin compatibility and thermal performance before substitution. Other REF32xx variants with different output voltages are not direct functional replacements unless the circuit allows for voltage adjustment.