ADR5044WARTZ-R7

Overview

The ADR5044WARTZ-R7 is a precision micropower shunt mode voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 4.096 V with an initial accuracy of ±0.1% and a maximum temperature coefficient of 75 ppm/°C. The device operates within an extended temperature range from −40°C to +125°C and requires no external compensation capacitor for stability. It supports a wide operating current range from 50 µA to 15 mA, making it suitable for space-critical applications.

Feature Summary

• Ultracompact SOT-23 package design optimized for space-constrained environments
• High precision performance with ±0.1% initial accuracy and low temperature drift
• Automotive qualification ensuring reliability under demanding operational conditions
• Stable operation without the need for external bypass capacitors

Applications

• Portable and battery-powered equipment
• Automotive electronic systems
• Data acquisition systems
• Instrumentation and process control circuits
• Power supply regulation modules

Procurement Notes

Verify that the specific part number matches the automotive grade designation (W) and the SOT-23-3 package configuration. Confirm RoHS compliance status as indicated in the ordering guide. Ensure the supplier documentation references the correct datasheet revision E specifications for the 4.096 V output variant. Cross-check the marking code R2W on the component body against official manufacturer records to prevent counterfeit substitution.

Selection Notes

Select this component when high accuracy and low temperature drift are required in a minimal footprint. The automotive qualification makes it appropriate for vehicle electronics where long-term reliability is critical. Consider the 4.096 V output level relative to system requirements. Evaluate the 50 µA minimum operating current against the lowest expected load conditions to ensure stable regulation. The absence of external capacitor requirements simplifies the PCB layout and reduces bill of materials complexity.

Part Context

This device belongs to the ADR504x family of precision voltage references, which includes variants with different output voltages such as 2.048 V, 2.5 V, 3.0 V, and 5.0 V. All members share similar architectural features including bandgap technology and ultracompact packaging options. The W suffix specifically denotes automotive qualification, distinguishing it from commercial grade parts while maintaining identical electrical characteristics for the B-grade accuracy tier.

Replacement Considerations

The datasheet indicates pin compatibility with LM4040 and LM4050 series devices. Designers should verify that the substitute components meet the specific automotive qualification and accuracy requirements of the original design before implementation.