LM385D-2.5R2G

Overview

The LM385D-2.5R2G is a two-terminal shunt voltage reference manufactured by onsemi, providing a nominal output of 2.5V. It utilizes a bandgap reference design to maintain stability across varying conditions. The device operates within a specified current range and offers initial accuracy typically within ±1% or ±0.8% depending on the specific grade, ensuring reliable performance in precision applications.

Feature Summary

• Provides a stable 2.5V reference voltage using bandgap technology
• Operates as a two-terminal shunt regulator with low dynamic impedance
• Maintains consistent performance over temperature variations

Applications

• Precision analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage sources
• Portable instrumentation power supplies

Procurement Notes

Verify the exact suffix R2G against official onsemi documentation to confirm tape-and-reel packaging specifications and binning grades. Ensure compatibility with existing circuit designs regarding thermal dissipation and current limiting resistors. Cross-reference datasheets for any updates on lead-free compliance or package dimensions prior to final procurement decisions.

Selection Notes

Select this component when a fixed 2.5V reference is required in space-constrained surface-mount applications. Consider the operating current range and temperature coefficient requirements relative to the system's precision needs. Compare against other LM385 variants if different accuracy grades or package types are necessary for the specific design constraints.

Part Context

This part belongs to the LM385 family of micropower shunt voltage references. These devices are widely used in industrial and consumer electronics where a stable voltage source is critical. The D package indicates a standard small-outline integrated circuit format suitable for automated assembly processes.

Replacement Considerations

Direct replacements include LM385B-2.5 for higher accuracy or LM385-2.5 for standard accuracy. Other manufacturers offer pin-compatible alternatives such as TL431-based references or dedicated 2.5V bandgap chips, provided electrical characteristics match the original design requirements.