LM385PSRE4-1-2

Overview

The LM385PSRE4-1-2 is a fixed shunt voltage reference integrated circuit manufactured by Texas Instruments. It provides a nominal output voltage of 1.235V with an initial accuracy of ±2%. The device operates within a temperature range of 0°C to +70°C and supports a maximum cathode current of 20mA. It utilizes an 8-pin SOIC package for surface-mount installation.

Feature Summary

• Provides a stable 1.235V reference voltage suitable for precision applications
• Operates as a shunt regulator with low power consumption characteristics
• Designed for surface-mount integration in compact electronic circuits

Applications

• Analog-to-digital converter reference inputs
• Precision measurement instrumentation
• Battery-powered monitoring systems

Procurement Notes

Verify the specific suffix E4 indicates lead-free compliance against the official datasheet. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range meets the system requirements. Check for any recent product change notices affecting specifications.

Selection Notes

Select this component when a fixed 1.235V reference is required in an 8-pin surface-mount package. Compare performance against adjustable variants if flexibility is needed. Consider thermal management within the commercial temperature range. Verify current limits align with the shunt regulator topology.

Part Context

This part belongs to the LM385 family of micro-power voltage references from Texas Instruments. The series includes various fixed and adjustable versions with different accuracies and packages. The LM385PSRE4-1-2 specifically targets cost-sensitive designs requiring reliable fixed voltage references.

Replacement Considerations

LM385PS-1-2 is a direct functional equivalent without the lead-free suffix. LM385M/NOPB offers adjustable voltage options in similar packaging. Verify pin compatibility before substitution.