NSREF3125-DSTR

Overview

The NSREF3125-DSTR is a precision voltage reference IC from the NSREF31xx series, manufactured by NOVOSENSE. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±0.2%. The device features a typical temperature coefficient of 5 ppm/°C and a maximum of 15 ppm/°C. Operating input voltage ranges from 1.8 V to 5.5 V. It exhibits low noise of 20 µVpp (typical) in the 0.1 Hz to 10 Hz band and consumes only 130 µA of quiescent current. The part is housed in a SOT-23-3L package.

Feature Summary

• Delivers high initial accuracy of ±0.2% for precise ADC sampling applications
• Achieves ultra-low temperature drift with a typical value of 5 ppm/°C
• Features minimal low-frequency noise output of 20 µVpp for signal integrity
• Requires no output capacitor and operates with a minimum dropout voltage of 1 mV

Applications

• Photovoltaic systems requiring stable reference voltages
• Industrial automation equipment and sensors
• Digital power supply control circuits
• Electric vehicle charging stations
• Portable measurement devices and transmitters

Procurement Notes

Verify the specific suffix 'DSTR' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure the ordered component matches the NSREF31xx series characteristics, particularly the 5 ppm/°C temperature coefficient, which distinguishes it from the NSREF30xx series. Confirm automotive or industrial grade availability if required for the target application environment.

Selection Notes

Select this component when superior thermal stability is critical compared to standard references. The NSREF31xx series offers half the temperature drift of the NSREF30xx series, making it suitable for high-precision data acquisition. Consider the low quiescent current for battery-powered designs and the lack of output capacitance requirement for simplified PCB layout and reliability.

Part Context

This part belongs to the NSREF30/31xx family of voltage references launched by NOVOSENSE in early 2023. The NSREF31xx sub-series focuses on enhanced performance metrics, specifically lower temperature drift and noise, targeting demanding applications in photovoltaics, industrial automation, and digital power. The series includes multiple output voltage options within the same footprint.

Replacement Considerations

NSREF3025-DSTR serves as a functional alternative within the same package but exhibits higher temperature drift (35 ppm/°C max). Verify that the reduced precision of the NSREF30xx series meets the system requirements before substitution.