LM4041CQFTA

Voltage Reference Overview

The LM4041CQFTA is a precision micro-power shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 1.225V with an initial tolerance of ±0.5% at +25°C. The device operates within a wide current range from 60µA to 12mA and maintains stability across an extended temperature range of -40°C to +125°C. It features a maximum temperature coefficient of 100ppm/°C and low output noise of 20µVRMS (10Hz to 10kHz). Packaged in the compact SOT23-3 surface-mount format, it requires no external output capacitor for stability.

Voltage Reference Feature Summary

• Provides stable 1.225V reference without requiring external stabilization capacitors
• Maintains excellent stability when driving highly capacitive loads
• Offers high reliability qualification suitable for demanding environments
• Delivers low output noise and low dynamic impedance

Voltage Reference Applications

• Battery powered equipment
• Precision power supplies
• Portable instrumentation
• Data acquisition systems

Voltage Reference Procurement Notes

Verify that the specific ordering suffix 'Q' aligns with your required automotive or high-reliability standards, as standard commercial variants may differ. Confirm package type matches the SOT23 footprint requirements. Ensure the C-grade tolerance specification meets the circuit accuracy needs. Check for RoHS compliance documentation if environmental regulations apply to the assembly process.

Voltage Reference Selection Notes

Select this component when space constraints necessitate a small SOT23 package while maintaining high precision. Choose the C-grade variant specifically for applications requiring tighter initial voltage tolerances compared to the D-grade option. Consider the extended temperature range capability if the operating environment exceeds standard industrial limits. Evaluate the low quiescent current requirement against the minimum operating current threshold of 60µA.

Voltage Reference Part Context

This part belongs to the LM4041 family of bandgap voltage references designed for micro-power applications. It serves as a pin-for-pin compatible alternative to other industry-standard references. The series includes both fixed 1.225V outputs and adjustable variants. Manufacturing utilizes advanced wafer-level trimming to ensure precise voltage accuracy and low temperature drift characteristics.

Voltage Reference Replacement Considerations

LM4041DFTA

Voltage Reference FAQ

Does the LM4041CQFTA require an external capacitor for stability?

No, the device is designed to be highly tolerant of capacitive loads and does not require an external output capacitor to maintain stability.

What is the minimum operating current for this device?

The minimum operating current is specified as 60µA under recommended operating conditions.