LM4040D50QDBZR

Overview

The LM4040D50QDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy of 1% and a temperature coefficient of 150 ppm/°C. The device operates within an extended temperature range from -40°C to +125°C and is housed in a space-saving SOT-23-3 package. It supports a cathode current range from a minimum of 79 µA to a maximum of 15 mA, ensuring stable performance across varying load conditions without requiring external capacitors.

Feature Summary

• Provides a fixed 5V reference output with 1% initial accuracy
• Operates reliably over an extended temperature range of -40°C to +125°C
• Maintains stability with all capacitive loads without requiring external capacitors

Applications

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

Procurement Notes

Verify the specific suffix QDBZR corresponds to the required extended temperature grade and SOT-23-3 packaging configuration. Confirm that the 1% tolerance and 150 ppm/°C temperature coefficient meet the design requirements for the target application environment. Ensure compatibility with the intended operating current range between 79 µA and 15 mA.

Selection Notes

Select this component when a fixed 5V reference is needed in compact designs requiring operation up to 125°C. The D-grade specification offers a balance of cost and performance for applications tolerant of 1% initial accuracy. Consider the low quiescent current capability for battery-powered or energy-constrained systems where minimal power draw is critical.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series includes various grades (A, B, C, D) offering different accuracy and temperature coefficient specifications. The 'Q' suffix indicates characterization for the extended industrial temperature range, while 'D' denotes the 1% accuracy grade.

Replacement Considerations

LM4040D50IDBZR