TS3325ACR

Overview

The TS3325ACR is a micropower high-precision series voltage reference from the TS33 family, manufactured by STMicroelectronics. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.15%. The device operates over an extended temperature range from -40 °C to +125 °C and features a maximum temperature coefficient of 30 ppm/°C. It exhibits ultra-low operating current, typically 3.9 μA at 25 °C, making it suitable for power-restricted designs. The component is RoHS compliant (Ecopack2) and is available in a SOT323-3L package.

Feature Summary

• Fixed 2.5 V output voltage
• High initial accuracy of ±0.15%
• Ultra-low operating current
• Extended industrial temperature range

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Precision analog-to-digital converter references

Procurement Notes

Verify the specific suffix 'CR' against the manufacturer's official documentation to confirm the tape and reel packaging configuration. Ensure the order matches the exact part number TS3325ACR to guarantee the correct 2.5 V output voltage and SOT323-3L package type. Cross-reference the datasheet revision date to ensure compliance with current environmental standards such as Ecopack2.

Selection Notes

Select this component when a stable 2.5 V reference is required in space-constrained applications due to its small SOT323-3L footprint. It is appropriate for designs prioritizing low quiescent current to extend battery life while maintaining high precision. Consider the -40 °C to +125 °C operating range for industrial environments requiring robust thermal performance without additional heating or cooling.

Part Context

The TS3325ACR belongs to the TS33 family of low-power series voltage references designed for high precision and stability. This family offers multiple fixed output voltages, including 1.25 V, 2.048 V, 3.0 V, and 3.3 V, alongside the 2.5 V variant. The components share common characteristics such as low temperature coefficients and compatibility with capacitive loads, serving as reliable reference sources for various analog signal processing circuits.

Replacement Considerations

Check for direct substitutes within the TS33 family offering different fixed voltages if system requirements change. Verify pinout compatibility with alternative packages like QFN8 or SOT23-3L if board layout modifications are permitted. Ensure any replacement maintains the same initial accuracy and temperature coefficient specifications.