LM4040D25IDBZR

Overview

The LM4040D25IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum cathode current of 15 mA and draws a typical operating current of 80 µA. Packaged in a surface-mount SOT-23-3 case, it is RoHS compliant and classified under EAR99.

Feature Summary

• Provides stable fixed voltage reference for analog circuits
• Micropower operation suitable for battery-powered systems
• Compact surface-mount packaging for space-constrained designs

Applications

• Portable instrumentation requiring precise voltage references
• Battery-operated measurement devices
• Data acquisition systems needing stable reference voltages

Procurement Notes

Verify the specific suffix IDBZR corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the D-series accuracy class meets the design tolerance requirements. Ensure compatibility with standard SOT-23 footprint layouts during PCB design review.

Selection Notes

Select this component when a 2.5 V reference with ±1% accuracy is sufficient for the application. Consider the 150 ppm/°C temperature coefficient against environmental conditions. Evaluate the 80 µA quiescent current impact on overall system power budget compared to higher precision alternatives.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed voltage options and accuracy grades. The LM4040 series is designed for applications requiring low power consumption and small form factors while maintaining reliable performance across industrial temperature ranges.

Replacement Considerations

LM4040D25IDBZT is available in cut-tape packaging instead of reel.