LM4040A25IDBZTG4

Overview

The LM4040A25IDBZTG4 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 ±0.1%. The device operates in the SOT-23-3 surface-mount package and supports a maximum shunt current of 15 mA, with a minimum operating current of approximately 75 µA. It features a temperature coefficient of 20 ppm/°C and functions within a junction temperature range of -40°C to +125°C.

Feature Summary

• Delivers high-precision voltage regulation with tight initial tolerance for accurate circuit referencing.
• Operates as a shunt regulator with low quiescent current consumption suitable for power-sensitive designs.
• Maintains stable performance across wide industrial temperature ranges with minimal drift.

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Data acquisition systems requiring stable voltage baselines
• Portable instrumentation powered by battery supplies

Procurement Notes

Verify the complete part number including the suffix to ensure correct accuracy grade and packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for any recent product lifecycle notifications or obsolescence warnings directly from Texas Instruments to avoid supply chain disruptions during production planning.

Selection Notes

Select this component when applications demand sub-percent accuracy combined with low power consumption in a compact footprint. Compare against higher drift alternatives if thermal stability is critical. Ensure the design allows sufficient headroom voltage above the 2.5 V reference while respecting the maximum 15 mA current limit for proper shunt operation.

Part Context

This device belongs to the LM4040 family of micropower shunt references designed for cost-effective precision applications. It complements other variants offering different voltage outputs and accuracy grades within the same series. The SOT-23-3 package enables space-constrained PCB layouts while maintaining reliable electrical performance for general-purpose voltage referencing tasks.

Replacement Considerations

LM4040A25IDBZT