LM4041CQDBZTG4

Overview

The LM4041CQDBZTG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It operates within an extended industrial temperature range of -40°C to +125°C and utilizes an SOT-23-3 surface-mount package. The device provides a fixed output voltage of 1.225V with an initial accuracy tolerance of ±0.5%. It features a low temperature coefficient of 150 ppm/°C, ensuring stable performance across varying thermal conditions. The component supports a wide operating current range from a minimum of 60µA to a maximum cathode current of 12mA. It maintains stability with all capacitive loads without requiring external output capacitors.

Feature Summary

• Provides fixed 1.225V output with ±0.5% initial accuracy
• Operates in extended temperature range from -40°C to +125°C
• Stable with all capacitive loads without external capacitors

Applications

• Data acquisition systems
• Portable battery-powered equipment
• Process control instrumentation

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 'Q' designation aligns with automotive or extended temperature requirements for your specific application environment. Ensure the SOT-23-3 package dimensions match your PCB footprint constraints. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when a fixed 1.225V reference is required in space-constrained designs. It is suitable for applications needing stability with capacitive loads without additional components. Consider the 150 ppm/°C temperature coefficient for thermal environments up to 125°C. Verify that the 12mA maximum current capability meets the load requirements of the reference circuit.

Part Context

This part belongs to the LM4041 family of precision micropower shunt voltage references. The family includes adjustable versions and various accuracy grades (A, B, C, D). The LM4041 series is designed for portable applications due to its low quiescent current and small package options. It serves as a key component in power management and signal conditioning circuits where precise voltage referencing is critical.

Replacement Considerations

LM4041CQDBZT: Identical electrical specifications but may differ in packaging type (tube vs. reel) or RoHS compliance status.