TS3325AQPR

Overview

The TS3325AQPR is a micropower high precision series voltage reference manufactured by STMicroelectronics. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.15%. The device operates within an input voltage range of 1.8 V to 5.5 V and draws a typical quiescent current of 3.9 μA at 25 °C. It features a maximum temperature coefficient of 30 ppm/°C over the extended operating temperature range of -40 °C to +125 °C. The component is housed in a QFN-8 package (1.5x1.5 mm) and supports a maximum load current of ±5 mA.

Feature Summary

• Ultra-low operating current suitable for power-restricted designs
• High initial accuracy ensuring stable and precise output voltages
• Stable performance when used with capacitive loads
• Extended temperature range operation from -40 °C to +125 °C

Applications

• Portable equipment
• Data acquisition systems
• Instrumentation
• Medical equipment
• Test equipment

Procurement Notes

Verify the specific suffix 'QPR' corresponds to the QFN-8 package and reel/cut tape packaging format as defined in the official STMicroelectronics ordering information. Confirm that the 'A' grade designation aligns with the required ±0.15% initial accuracy specification for your application. Ensure compatibility with the recommended operating conditions, specifically the input voltage range and thermal management requirements for the QFN-8 footprint.

Selection Notes

Select this component when a fixed 2.5 V reference with high precision is required in space-constrained designs. The QFN-8 package offers a compact solution compared to larger alternatives. Consider the ultra-low quiescent current if battery life or power efficiency is critical. Verify that the capacitive load stability meets the requirements of the downstream circuitry, as the device is optimized for stability with specific load capacitance ranges.

Part Context

The TS3325AQPR belongs to the TS33 family of micropower high precision series voltage references. This family includes variants with different fixed output voltages such as 1.25 V, 2.048 V, 3.0 V, and 3.3 V. All members share similar electrical characteristics, including low operating current and high accuracy, but are distinguished by their output voltage and available package options like SOT23-3L and SOT323-3L.

Replacement Considerations

Other TS33 family members with different output voltages may serve as functional substitutes if the voltage requirement changes. Cross-package equivalents include TS3325ACR (SOT323-3L) and TS3325AMR (SOT23-3L), provided the pinout and mechanical constraints allow for the change.