LM4040D25QDBZTG4

Overview

The LM4040D25QDBZTG4 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 +125°C and features a temperature coefficient of 150 ppm/°C. It utilizes a SOT-23-3 surface-mount package and supports a maximum shunt current of 15 mA with a minimum operating current of 75 µA.

Feature Summary

• Provides stable fixed reference voltage for precision applications
• Designed for low power consumption in portable systems
• Suitable for harsh environments with extended temperature range

Applications

• Portable instrumentation circuits
• Battery-powered measurement devices
• Data acquisition systems requiring stable references

Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification requirements if applicable to your design. Confirm the 'G4' suffix aligns with current RoHS and manufacturing standards. Ensure the SOT-23-3 footprint matches your PCB layout constraints. Check for any recent product change notices regarding packaging or marking updates before finalizing procurement.

Selection Notes

Select this component when a 2.5 V reference with ±1% tolerance is required. Consider the 150 ppm/°C temperature coefficient for thermal stability needs. Evaluate the 75 µA minimum current requirement against your circuit's quiescent current limits. Compare against other LM4040 variants if different accuracy levels or voltages are needed.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The LM4040 series is widely used in industrial and consumer electronics where space-constrained, low-power voltage referencing is essential.

Replacement Considerations

LM4040D25IDBZT: Similar performance but without the Q automotive grade suffix.