LM4040BIM3-4.1

Overview

The LM4040BIM3-4.1 is a micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 15 mA and is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Provides stable precision voltage reference performance across the industrial temperature range
• Designed for space-constrained applications utilizing a compact three-terminal SOT-23 package
• Operates with ultra-low power consumption suitable for battery-powered systems

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems

Procurement Notes

Verify manufacturer lineage as National Semiconductor was acquired by Texas Instruments. Confirm RoHS compliance status through official documentation. Ensure the specific suffix matches required tolerance and packaging specifications. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a 4.096 V reference with 0.2% initial accuracy is required. Consider the 150 ppm/°C temperature coefficient against stricter requirements. Verify that the SOT-23-3 package fits the board layout constraints. Ensure the operating temperature range meets the application environment needs.

Part Context

This component belongs to the LM4040 series of micropower shunt voltage references. The series offers various fixed output voltages including 2.048 V, 2.5 V, 3.0 V, and 5.0 V. Different suffixes indicate varying initial accuracies such as 0.1%, 0.2%, 0.5%, and 1%. The family is designed for high precision and low power operation in portable electronics.

Replacement Considerations

LM4040BIM3-4.1/NOPB is a verified equivalent from Texas Instruments.