LM4040C20IDBZTG4

Overview

The LM4040C20IDBZTG4 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 ±0.5%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 100 ppm/°C. It is housed in a SOT-23-3 surface-mount package. The component supports a maximum cathode current of 15 mA and requires a minimum operating current of 75 µA.

Feature Summary

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

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the package marking code matches the SOT-23-3 physical dimensions. Ensure the supply chain source provides valid traceability for automotive or industrial grade requirements if applicable.

Selection Notes

Select this component when a 2.048 V reference is required in a compact SOT-23-3 footprint. Consider the 100 ppm/°C temperature coefficient for thermal stability needs. Verify that the circuit design can maintain the minimum 75 µA cathode current to ensure regulation without exceeding the 15 mA maximum limit.

Part Context

This part belongs to the LM4040 family of micropower shunt references. It shares the same pinout and form factor as other variants in the series, differing primarily in output voltage and accuracy grades. The 'C' designation typically denotes the commercial/industrial temperature range variant within the product line.

Replacement Considerations

LM4040C20IDBZR is the tape-and-reel version of the same electrical specification.