LM385Z-2.5G

Overview

The LM385Z-2.5G is a micropower shunt voltage reference manufactured by onsemi, designed to provide a stable 2.5V output. It operates within a wide current range of 10µA to 20mA, ensuring low dynamic impedance and minimal noise. The device features an initial accuracy of ±2.0% and utilizes a TO-92 three-pin through-hole package. It is engineered for stable operation across temperatures from 0°C to +70°C, making it suitable for precision analog circuits requiring reliable voltage regulation.

Feature Summary

• Provides a fixed 2.5V precision reference voltage with tight initial tolerance
• Operates efficiently over a wide cathode current range from microamps to 20mA
• Features low dynamic impedance and low noise for stable signal integrity
• Utilizes a compact TO-92 through-hole package for standard circuit integration

Applications

• Portable battery-powered instrumentation
• Precision power supply management circuits
• Analog-to-digital converter (ADC) reference sources
• Temperature compensation networks in sensor interfaces

Procurement Notes

Verify the specific suffix 'G' against the manufacturer's latest datasheet to confirm compliance with RoHS directives and material declarations. Ensure the ordering part number matches the required accuracy grade and packaging format. Cross-reference the component marking with official documentation to prevent counterfeit substitution during procurement.

Selection Notes

Select this component when a fixed 2.5V reference is required in a through-hole design. Consider the ±2.0% initial accuracy and temperature coefficient limits relative to system requirements. Evaluate the thermal dissipation capabilities within the TO-92 package if operating near maximum current limits or elevated ambient temperatures.

Part Context

This component belongs to the LM385 family of micropower bandgap voltage references. The series is characterized by its ability to function as a shunt regulator with excellent long-term stability. The Z variant typically denotes specific accuracy grades and packaging options available from onsemi, distinguishing it from other manufacturers' equivalents like the LM285 or LM185.

Replacement Considerations

Direct substitutes include the LM385Z-2.5 from Texas Instruments, which shares identical electrical characteristics and pinout. Other compatible alternatives may include the LM285Z-2.5 or LM185Z-2.5 depending on the required temperature range and accuracy specifications.