LM285Z-2.5RA

Overview

The LM285Z-2.5RA is a micropower shunt voltage reference manufactured by onsemi, housed in an SOIC-8 surface-mount package. It provides a fixed 2.5V output with an initial accuracy of 1.5% and a temperature coefficient of 80 PPM/C. The device operates within a current range of 20 uA to 30 mA across a temperature span of -40 C to +85 C.

Feature Summary

• Provides a stable 2.5V reference voltage suitable for precision applications
• Operates efficiently at micropower levels with low minimum current requirements
• Features tight initial accuracy tolerance for reliable circuit performance

Applications

• Analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) biasing circuits
• Portable instrumentation requiring low power consumption

Procurement Notes

Verify the specific suffix 'RA' against official datasheets to confirm packaging details such as tape-and-reel specifications. Confirm RoHS compliance status and lead-free manufacturing dates directly with onsemi documentation prior to ordering.

Selection Notes

Select this component when a surface-mount shunt reference is required for space-constrained designs. Ensure the 80 PPM/C temperature coefficient meets system stability needs. Verify that the SOIC-8 footprint aligns with existing PCB layout constraints compared to through-hole alternatives.

Part Context

This part belongs to the LM285 family of micropower voltage references. Unlike TO-92 variants, the SOIC-8 package enables automated surface-mount assembly. The device utilizes bandgap technology to maintain regulation over wide temperature ranges.

Replacement Considerations

LM285D-2.5G offers identical electrical characteristics in the same SOIC-8 package. LM285Z-2.5/NOPB serves as a functional equivalent but utilizes a TO-92 through-hole package, requiring mechanical redesign.