LM4041CQDBZR

Overview

The LM4041CQDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It features an adjustable output voltage range from 1.225V to 10V, set via external resistors. The device offers an initial accuracy of 0.5% and a maximum temperature coefficient of 100ppm/°C. It operates within a wide current range of 60µA to 12mA and supports capacitive loads without requiring output capacitors. The component is housed in a SOT-23-3 surface-mount package and functions reliably across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Adjustable output voltage configuration using external resistor dividers
• Stable operation with all capacitive loads without additional components
• Low dynamic impedance and low noise characteristics for precision applications

Applications

• Data acquisition systems
• Power supply monitoring circuits
• Precision audio equipment
• Battery-powered devices

Procurement Notes

Verify the specific suffix 'Q' indicates the extended temperature grade (-40°C to +125°C) compared to standard industrial variants. Confirm the 'DBZ' package designation matches the required SOT-23-3 footprint for PCB layout compatibility. Ensure the ordering code corresponds to the trim level providing 0.5% accuracy. Cross-reference the datasheet revision date to confirm parameter consistency during procurement.

Selection Notes

Select this component when an adjustable reference voltage between 1.225V and 10V is required in a compact surface-mount form factor. The C-grade accuracy (0.5%) suits general precision applications where tighter tolerances are unnecessary. The Q-grade temperature rating makes it suitable for environments exceeding standard industrial limits. Consider the minimum operating current of 60µA for battery life optimization in low-power designs.

Part Context

This part belongs to the LM4041 family of precision shunt voltage references from Texas Instruments. The family includes fixed and adjustable versions with various accuracy grades (A, B, C, D) and temperature ranges (I, Q). The LM4041 series is designed for portable applications due to its micropower consumption and small SC-70/SOT-23-3 packaging options, offering a cost-effective solution for voltage referencing needs.

Replacement Considerations

LM4041CQDBZT: Same electrical specifications but in tube packaging instead of tape and reel.

FAQ

Does the LM4041CQDBZR require an output capacitor for stability?

No, the device is designed to be stable with all capacitive loads and does not require an external output capacitor.

What is the adjustable voltage range for this specific model?

The output voltage can be adjusted from 1.225V to 10V using an external resistor divider network.