REF3325AIRSER

Overview

The REF3325AIRSER is a fixed-output series voltage reference IC manufactured by Texas Instruments. It provides a stable 2.5V output with an initial accuracy of ±0.15%. The device operates within an input voltage range of 2.7V to 5.5V and draws a supply current of 8.5µA. It features a temperature coefficient of 30ppm/°C and low noise of 70µVp-p from 0.1Hz to 10Hz. The component supports a maximum output current of 5mA and functions reliably across a temperature range of -40°C to 125°C. It is housed in an 8-UQFN (1.5x1.5) surface-mount package.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial tolerance
• Maintains stability across wide industrial temperature ranges
• Optimized for low power consumption in battery-operated systems

Applications

• Data acquisition systems requiring precise analog references
• Industrial process control instrumentation
• Medical equipment signal conditioning circuits
• Portable test and measurement devices

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and temperature grade. Confirm RoHS compliance status as required by specific regional regulations. Check for moisture sensitivity level requirements during storage and handling. Ensure ESD protection measures are followed during assembly. Validate that the supplier provides original manufacturer documentation.

Selection Notes

Select this component when a 2.5V reference is needed with high accuracy and low drift. Consider the 8.5µA quiescent current for power-sensitive designs. Evaluate the 8-UQFN package size against available PCB space. Compare noise specifications against ADC requirements. Verify input voltage compatibility with the system power rail.

Part Context

This part belongs to the REF33xx family of precision voltage references from Texas Instruments. The series includes various output voltages such as 1.25V, 2.5V, 3.0V, and 3.3V. These components share similar architectural features including series reference topology and low-noise performance. The family is designed for applications demanding long-term stability and minimal temperature dependence.

Replacement Considerations

Direct substitutes include other REF3325 variants with different packaging or suffixes. Cross-reference with REF3325AIDBZR for SOT-23-3 package options. Verify pinout compatibility before substituting with packages like UQFN-8.