LM4040B20IDBZT

Overview

The LM4040B20IDBZT 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 +125°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and requires a minimum operating current of 75 µA. The component is housed in a surface-mount SOT-23-3 package.

Feature Summary

• Provides stable reference voltage with high initial accuracy
• Operates across extended industrial temperature ranges
• Designed for low power consumption applications

Applications

• Portable instrumentation circuits
• Battery-powered measurement systems
• Data acquisition signal conditioning

Procurement Notes

Verify the specific suffix IDBZT confirms the tape-and-reel packaging format distinct from tube variants. Confirm RoHS compliance status matches current manufacturing standards. Ensure the ordering part number aligns with the required accuracy grade and temperature range specifications for the target design.

Selection Notes

Select this component when a compact, low-power shunt reference is required for space-constrained designs. The SOT-23-3 package offers a small footprint suitable for dense PCB layouts. Consider the 15 mA maximum current capability against load requirements and ensure the minimum operating current threshold is met during all operational states.

Part Context

This device belongs to the LM4040 family of micropower shunt voltage references. The family includes various output voltages and accuracy grades. The LM4040 series is designed to replace larger, higher-power zener diodes in precision analog circuits requiring stable voltage references.

Replacement Considerations

• LM4040B20IDBZR