LM4040D50ILPRE3

Overview

The LM4040D50ILPRE3 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy tolerance of ±1%. The device operates within an ambient temperature range of -40°C to 85°C and features a maximum temperature coefficient of 150ppm/°C. It utilizes a TO-92-3 package for through-hole mounting. The component requires a minimum cathode current of 45µA and supports a maximum operating current of 15mA. It exhibits low dynamic impedance and wideband noise characteristics suitable for stable reference applications.

Feature Summary

• Provides a fixed 5V reference output with tight initial accuracy tolerances.
• Operates stably with all capacitive loads without requiring external output capacitors.
• Features low dynamic impedance and low noise for consistent performance across varying currents and temperatures.
• Designed for portable applications due to space-saving packaging and low minimum operating current.

Applications

• Data-acquisition systems
• Energy infrastructure monitoring
• Analog input modules
• Field transmitters
• Precision audio circuits

Procurement Notes

Verify the specific ordering suffix 'E3' confirms RoHS compliance and lead-free status as per manufacturer specifications. Confirm the 'I' suffix indicates the industrial temperature range (-40°C to 85°C) rather than extended ranges. Ensure the TO-92-3 package type matches the intended PCB footprint requirements. Check for any recent Product Change Notifications (PCN) regarding material or assembly changes that may affect compatibility.

Selection Notes

Select this component when a fixed 5V reference with ±1% accuracy is required in a through-hole configuration. It is suitable for designs needing stability under capacitive loads without additional compensation components. Consider the 150ppm/°C temperature coefficient for thermal drift calculations. Ensure the circuit design maintains cathode current between 45µA and 15mA for optimal regulation.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages including 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V. Different grades (A, B, C, D) provide varying levels of accuracy and temperature coefficients. The LM4040D represents the D-grade with 1% accuracy and 150ppm/°C coefficient.

Replacement Considerations

LM4040D50ILPR is listed as a manufacturer recommended alternative.