LM4041DQDBZRG4

Voltage Reference Overview

The LM4041DQDBZRG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225V with an initial accuracy of ±1%. The device features a temperature coefficient of 150 ppm/°C and operates within an extended industrial temperature range of -40°C to +125°C. It supports a maximum shunt current of 12 mA and requires a minimum operating current of 80 µA. Packaged in a compact SOT-23-3 surface-mount format, it is designed for stable performance across wide load conditions.

Voltage Reference Feature Summary

• Provides a fixed 1.225V reference output with high precision
• Operates stably on all capacitive loads without external compensation
• Designed for low-power applications with micropower consumption
• Suitable for harsh environments with extended temperature rating

Voltage Reference Applications

• Data acquisition systems requiring precise voltage references
• Battery-powered portable equipment needing low quiescent current
• Process control instrumentation and monitoring circuits
• Precision audio signal conditioning stages

Voltage Reference Procurement Notes

Verify the suffix 'G4' indicates lead-free compliance and RoHS adherence per Texas Instruments standards. Confirm the package type matches the required PCB footprint. Ensure the supply chain source is authorized to guarantee component authenticity and traceability. Check for any specific handling requirements related to moisture sensitivity levels during storage and assembly processes.

Voltage Reference Selection Notes

Select this component when a fixed 1.225V reference is required in space-constrained designs. It is appropriate for applications demanding stability over a wide temperature range without active thermal management. Consider the 1% tolerance if higher precision grades like A or B are not necessary. Evaluate the 12 mA current limit against peak load requirements to ensure adequate headroom.

Voltage Reference Part Context

This part belongs to the LM4041 family of precision micropower shunt voltage references from Texas Instruments. The family includes adjustable versions and various accuracy grades (A, B, C, D) with different temperature coefficients. The LM4041 series is widely used in industrial and automotive electronics where reliable voltage referencing is critical for analog-to-digital conversion and sensor interfacing.

Voltage Reference Replacement Considerations

LM4041DQDBZR is the non-green equivalent. LM4041D12IDBZR offers similar electrical characteristics but may differ in packaging or environmental compliance status.