LM4040C50IDBZR

Overview

The LM4040C50IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy of 0.5%. The device operates within an extended temperature range from -40°C to +125°C and features a maximum temperature coefficient of 100ppm/°C. It requires a minimum cathode current of 68µA and supports a maximum shunt current of 15mA. The component is housed in a space-saving SOT-23-3 surface-mount package.

Feature Summary

• Provides stable reference voltage with low dynamic impedance and low noise characteristics
• Operates stably with all capacitive loads without requiring external output capacitors
• Maintains performance across wide operating currents and temperature variations

Applications

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

Procurement Notes

Verify the specific suffix 'DBZR' corresponds to the SOT-23-3 package and reel packaging configuration. Confirm the 'C' grade designation ensures the required 0.5% initial accuracy and 100ppm/°C temperature coefficient for your design specifications. Ensure the extended temperature rating aligns with your environmental requirements.

Selection Notes

Select this component when a fixed 5V reference is needed in a compact surface-mount form factor. It is suitable for applications requiring stability under varying load conditions without external compensation capacitors. Consider the 0.5% tolerance and 100ppm/°C drift if higher precision grades like A or B are not strictly necessary for cost optimization.

Part Context

This part belongs to the LM4040 series of precision micropower shunt voltage references. The series offers various fixed output voltages including 2.048V, 2.5V, 3V, 4.096V, 8.192V, and 10V. Different grades (A, B, C, D) provide varying levels of accuracy and temperature coefficients to suit different cost-performance ratios.

Replacement Considerations

LM4040C50IDBZT is available in cut-tape packaging instead of reel.