TS3312AQPR

Overview

The TS3312AQPR is a micropower high precision series voltage reference from STMicroelectronics, providing a fixed 1.25 V output with an initial accuracy of ±0.15%. It operates within an input voltage range of 1.8 to 5.5 V and maintains stability across an extended temperature range of -40 °C to +125 °C. The device features ultra-low quiescent current, typically 3.9 μA at 25 °C, and a maximum temperature coefficient of 30 ppm/°C. It supports capacitive loads up to 10 μF and is housed in a compact QFN8 surface-mount package.

Feature Summary

• Delivers stable and precise fixed output voltages suitable for high-precision applications
• Ultra-low operating current ensures efficiency in power-restricted designs
• Maintains performance stability over the entire extended operating temperature range
• Compatible with capacitive loads without oscillation

Applications

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

Procurement Notes

Verify the specific part number TS3312AQPR against official STMicroelectronics documentation to confirm the QFN8 package and 1.25 V output specification. Ensure environmental compliance requirements match the ECOPACK grade available for this component. Confirm that the ordering suffix corresponds to the correct package type and temperature range before finalizing procurement.

Selection Notes

Select the TS3312AQPR when a fixed 1.25 V reference with high initial accuracy is required. Consider its ultra-low quiescent current for battery-powered or energy-constrained designs. Verify that the QFN8 package dimensions fit the spatial constraints of the application. Ensure the load capacitance remains within the specified stability limits to prevent oscillation.

Part Context

The TS3312AQPR belongs to the TS33 family of low-power series voltage references. This family offers various fixed output voltages including 1.25 V, 2.048 V, 2.5 V, 3.0 V, and 3.3 V. All variants share similar electrical characteristics such as high initial accuracy and low operating current, differing primarily in output voltage and available package options like QFN8, SOT23-3L, and SOT323-3L.

Replacement Considerations

Other members of the TS33 family, such as TS3320AQPR or TS3325AQPR, offer different fixed output voltages but share identical pinouts and electrical characteristics. These can serve as functional substitutes if the system design allows for adjustment to alternative reference voltages while maintaining the same package and accuracy requirements.