LM4040D25IDBZRG4

Overview

The LM4040D25IDBZRG4 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 utilizes a SOT-23 surface-mount package. Key electrical characteristics include a maximum shunt current of 15 mA, a minimum operating current of 75 µA, and a temperature coefficient of 150 ppm/°C.

Feature Summary

• Provides a stable 2.5 V reference voltage with ±1% initial accuracy for high-precision applications.
• Operates at micropower levels with a minimum cathode current requirement of 75 µA.
• Designed for compact designs using the standard SOT-23 three-pin surface-mount package.

Applications

• Portable battery-powered instrumentation requiring low quiescent current
• Data acquisition systems needing precise voltage references
• Temperature measurement circuits utilizing thermocouples or RTDs

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the 'D' grade designation corresponds to the ±1% accuracy and -40°C to +85°C operating temperature range. Ensure the SOT-23 package dimensions match the target PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 2.5 V reference is required with moderate precision (±1%) and low power consumption. It is suitable for applications where space is limited due to the SOT-23 package. Consider higher accuracy grades if tighter tolerance is needed, or wider temperature ranges if operation exceeds +85°C.

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 in small packages. The LM4040 series is designed to replace larger, less efficient reference solutions in modern portable and industrial electronics.

Replacement Considerations

LM4040D25IDBZR is the non-green equivalent without the G4 suffix. LM4040B25IDBZRG4 offers higher accuracy (±0.2%). LM4040C25IDBZRG4 provides improved temperature stability (100 ppm/°C). Verify pinout compatibility and thermal performance when substituting.