LM4040B20IDBZR

Overview

The LM4040B20IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a low operating current of 45 µA. Packaged in a compact SOT-23-3 surface-mount case, it offers high stability for space-constrained applications requiring reliable voltage regulation.

Feature Summary

• Micropower operation with low quiescent current consumption
• High initial accuracy for precise voltage referencing
• Compact three-terminal SOT-23 surface-mount package

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the specific suffix 'G4' against datasheet requirements for lead-free compliance and RoHS status. Confirm the exact operating temperature range matches the application environment. Ensure the SOT-23 footprint aligns with the PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this component when a stable 2.048 V reference is required with tight tolerance constraints. Consider the low power consumption for battery-operated designs. Evaluate the thermal performance within the specified industrial temperature range to ensure long-term reliability under varying environmental conditions.

Part Context

This part belongs to the LM4040 family of precision shunt voltage references from Texas Instruments. The series is designed to replace Zener diodes in applications demanding higher accuracy and lower noise. The B-grade designation indicates tighter initial accuracy compared to standard grades, suitable for critical analog signal conditioning tasks.

Replacement Considerations

LM4040B20IDBZRG4