LM4041CQDBZT

Voltage Reference Overview

The LM4041CQDBZT is a precision shunt voltage reference from Texas Instruments, housed in an SOT-23-3 surface-mount package. It features an adjustable output voltage range of 1.225V to 10V, set via external resistors. The device offers an initial accuracy of 0.5% and a temperature coefficient of 100 ppm/°C. It operates within a wide current range of 60µA to 12mA and supports temperatures from -40°C to +125°C. Designed for stability with any capacitive load without external compensation, it provides low dynamic impedance and noise.

Voltage Reference Feature Summary

• Adjustable output voltage configuration using external resistor dividers
• Stable operation with all capacitive loads without requiring output capacitors
• Extended industrial temperature rating suitable for harsh environments

Voltage Reference Applications

• Data acquisition systems
• Power supply monitoring circuits
• Precision instrumentation and test equipment
• Process control applications

Voltage Reference Procurement Notes

Verify the specific suffix 'CQ' indicates automotive qualification (AEC-Q100) and extended temperature range (+125°C). Confirm the package type matches the design footprint. Ensure the adjustable topology fits the circuit requirements compared to fixed-voltage alternatives. Check for RoHS compliance status on the official datasheet before finalizing procurement.

Voltage Reference Selection Notes

Select this component when an adjustable reference voltage between 1.225V and 10V is required in a compact SOT-23-3 package. It is suitable for designs needing 0.5% initial accuracy and operation up to 125°C. Consider the minimum operating current of 60µA for battery-powered applications where low quiescent current is critical.

Voltage Reference Part Context

This part belongs to the LM4041 family of micropower shunt voltage references. The family includes fixed and adjustable versions with various accuracy grades (A, B, C, D) and temperature ranges. The LM4041 series is designed for portable applications due to its small footprint and low power consumption, offering flexibility through fuse and Zener-zap trimming during manufacturing.

Voltage Reference Replacement Considerations

LM4041CDBZR: Fixed 1.225V version, lower temperature range. LM4041CIDBZT: Adjustable version, standard industrial temperature range (-40°C to +85°C). LM4041DEM3-1.2/NOPB: Fixed 1.225V, extended temperature range.