LM4040DIM3X-4.1

Overview

The LM4040DIM3X-4.1 is a precision micropower shunt voltage reference from Texas Instruments, part of the LM4040-N series. It provides a fixed output voltage of 4.1 V with an initial accuracy of 1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. Packaged in a surface-mount SOT-23-3 case, it supports a maximum shunt current of 15 mA and requires a minimum operating current of 62 µA.

Feature Summary

• Provides stable fixed reference voltage for analog circuits
• Micropower consumption suitable for battery-operated systems
• Compact surface-mount packaging for space-constrained designs

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems needing stable reference sources

Procurement Notes

Verify the exact suffix configuration against the manufacturer datasheet to ensure compatibility with specific accuracy and temperature grade requirements. Confirm RoHS compliance status and lead times through authorized distributors. Check for alternative package options if surface-mount constraints change during design finalization.

Selection Notes

Select this component when a 4.1 V fixed reference with 1% initial accuracy is required. Ensure the application current stays within the 62 µA minimum and 15 mA maximum limits. Consider the 150 ppm/°C temperature coefficient for thermal stability needs. Verify that the SOT-23-3 package fits the PCB layout constraints.

Part Context

This part belongs to the LM4040-N family of precision micropower shunt voltage references. The 'DIM3X' suffix indicates a specific accuracy grade (1%) and surface-mount SOT-23-3 packaging variant. It serves as a low-cost, high-precision alternative to more complex reference solutions in portable and industrial applications.

Replacement Considerations

LM4040CIM3X-4.1/NOPB offers similar functionality with potentially different accuracy grades. LM4040BIM3X-4.1/NOPB provides higher precision at 0.2% accuracy. Verify pinout compatibility and thermal performance before substitution.