LM385BDE4-2-5

Overview

The LM385BDE4-2-5 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 2.5V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a low temperature coefficient of 20 ppm/°C. It is housed in an 8-SOIC surface-mount package and supports a maximum cathode current of 20 mA.

Feature Summary

• Provides stable micropower voltage referencing for precision applications
• Ensures high accuracy with ±1% initial tolerance
• Maintains performance stability across extended industrial temperature ranges

Applications

• Precision analog-to-digital converter (ADC) references
• Data acquisition systems requiring stable voltage sources
• Battery-powered instrumentation circuits

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status when sourcing. Confirm the package type matches the design requirements, as variations exist within the family. Check for end-of-life notices or obsolescence warnings from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed 2.5V reference with tight initial accuracy is required. The 20 ppm/°C temperature coefficient makes it suitable for environments with significant thermal fluctuations. Ensure the circuit design accommodates the 20 mA maximum current limit for proper shunt operation.

Part Context

This part belongs to the LMx85 series of micropower voltage references from Texas Instruments. It shares functional similarities with other variants like the LM385-2.5 but offers improved accuracy and extended temperature specifications. The DE4 suffix denotes the specific 8-SOIC package and manufacturing revisions.

Replacement Considerations

LM385BDE4-2-5/NOPB is a confirmed direct replacement offering identical electrical characteristics and pinout compatibility.