LM4040C41IDBZR

Overview

The LM4040C41IDBZR is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096V with an initial accuracy tolerance of ±0.5%. The device operates within an ambient temperature range of -40°C to 85°C and features a maximum average temperature coefficient of 100ppm/°C. It requires a minimum cathode current of 45µA (typical) and supports a maximum continuous cathode current of 15mA. The component is housed in a space-saving SOT-23-3 package.

Feature Summary

• Offers tight output tolerances and low temperature coefficients for stable performance across varying conditions
• Operates stably with all capacitive loads without requiring external output capacitors
• Designed for portable applications due to micropower consumption characteristics

Applications

• Data-Acquisition Systems
• Energy Infrastructure
• Analog Input Modules
• Field Transmitters
• Precision Audio

Procurement Notes

Verify the specific suffix 'DBZR' corresponds to the SOT-23-3 surface-mount package configuration. Confirm that the 'I' designation aligns with the required industrial temperature range of -40°C to 85°C for your application environment. Ensure the C-grade accuracy meets system requirements before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 4.096V reference with ±0.5% accuracy is required in a compact SOT-23-3 footprint. It is suitable for designs needing stability with capacitive loads and low power consumption. Consider the industrial temperature rating if operation exceeds standard commercial limits but does not require extended automotive ranges.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references from Texas Instruments. The series includes various grades (A, B, C, D) offering different accuracy and temperature coefficient combinations. The LM4040C41IDBZR specifically represents the C-grade variant with 0.5% tolerance and 100ppm/°C coefficient in the DBZ package.

Replacement Considerations

LM4040C41IDCKR: SC-70-5 package equivalent. LM4040C41IDBZT: Cut tape packaging variant.