LM4041DQDBZT

Voltage Reference Overview

The LM4041DQDBZT is a precision micropower shunt voltage reference from Texas Instruments, featuring a fixed output of 1.23 V with an initial accuracy of ±0.5%. It operates within a temperature range of -40°C to +125°C and utilizes a SOT-23 surface-mount package. The device supports a wide operating current range from 45 μA to 12 mA and maintains stability across all capacitive loads without requiring external output capacitors.

Voltage Reference Feature Summary

• Provides stable reference voltage across wide capacitive loads without external components
• Offers low dynamic impedance and low noise for high precision applications
• Features extended industrial temperature rating for harsh environments

Voltage Reference Applications

• Data acquisition systems
• Power supply monitoring circuits
• Portable battery-powered equipment
• Precision audio instrumentation

Voltage Reference Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification status per official documentation. Confirm the 'DBZT' suffix corresponds to the correct SOT-23 tape-and-reel packaging configuration. Ensure compatibility with system thermal requirements given the 125°C maximum junction temperature limit defined in the datasheet specifications.

Voltage Reference Selection Notes

Select this component when a fixed 1.23 V reference is required with ±0.5% tolerance. Choose over adjustable variants if circuit complexity must be minimized. Consider the 45 μA minimum operating current for low-power designs. Verify that the shunt topology fits the application's ground connection strategy compared to series references.

Voltage Reference Part Context

This part belongs to the LM4041 family of micropower shunt references. It shares core architecture with the LM4040 series but offers different voltage options. The 'Q' designation typically aligns with automotive-grade reliability standards, distinguishing it from standard commercial grade parts within the same physical footprint.

Voltage Reference Replacement Considerations

LM4041CQDBZT: Offers tighter ±0.5% accuracy at potentially higher cost. LM4041BQDBZT: Provides 0.2% accuracy for higher precision needs. LM4041AQDBZT: Delivers 0.1% accuracy for critical applications. LM4041DQDBZR: Same electrical specs but different reel packaging quantity.