LM4040C41IDBZT

Overview

The LM4040C41IDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.5%. The device operates within a temperature range of -40°C to +125°C and features a maximum temperature coefficient of 150 ppm/°C. It requires a minimum cathode current of 68 µA and supports a maximum shunt current of 15 mA. Packaged in a space-saving SOT-23-3 surface-mount format, it is designed for portable applications.

Feature Summary

• Offers tight output tolerances and low temperature coefficient for stable performance
• Operates stably with all capacitive loads without requiring external output capacitors
• Designed for portable applications with low power consumption characteristics

Applications

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

Procurement Notes

Verify the specific suffix 'DBZT' corresponds to the SOT-23-3 package and tape-and-reel packaging configuration. Confirm that the C-grade designation aligns with the required 0.5% initial accuracy and 150 ppm/°C temperature coefficient specifications for your design. Ensure the extended temperature range rating meets environmental requirements.

Selection Notes

Select this component when a fixed 4.096 V reference with 0.5% accuracy is required in a compact SOT-23-3 package. It is suitable for designs needing stability across a wide temperature range up to 125°C. Consider the minimum operating current of 68 µA when designing bias circuits to ensure proper regulation under light load conditions.

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 combinations of accuracy and temperature coefficients. The LM4040C41 specifically denotes the C-grade version with a 4.096 V output voltage.

Replacement Considerations

LM4040D41IDBZT offers similar functionality with 1.0% accuracy. LM4040B41IDBZT provides higher precision at 0.2% accuracy. LM4040A41IDBZT delivers the highest precision at 0.1% accuracy. All share the same pinout and package options.