ADR5043ARTZ-R2

Overview

The ADR5043ARTZ-R2 is a precision micropower shunt mode voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 3.0 V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 100 ppm/°C. The device operates within a wide current range from 50 µA to 15 mA and functions across an extended temperature range of −40°C to +125°C. Housed in an ultracompact SOT-23-3 package, it requires no external compensation capacitor for stability.

Feature Summary

• Ultracompact SOT-23-3 package designed for space-critical applications
• High precision with initial accuracy of ±0.2% and low temperature drift
• Wide operating current range from 50 µA to 15 mA suitable for battery-powered equipment
• Stable without external capacitors while remaining compatible with any capacitive load

Applications

• Portable and battery-powered equipment
• Automotive systems
• Data acquisition systems
• Instrumentation and process control
• Energy management systems

Procurement Notes

Verify the specific grade (A or B) and packaging suffix when ordering, as these determine the exact accuracy and temperature coefficient specifications. Confirm RoHS compliance status and ensure the selected variant matches the required automotive qualification if applicable. Cross-reference the datasheet revision to confirm pin configuration and absolute maximum ratings before finalizing procurement.

Selection Notes

Select this component when a stable 3.0 V reference is needed in a small footprint. The Grade A version offers ±0.2% accuracy, while Grade B provides tighter tolerance. Ensure the bias resistor calculation accounts for the minimum 50 µA operating current at the lowest supply voltage and the maximum 15 mA limit at the highest supply voltage to maintain regulation.

Part Context

This part belongs to the ADR504x family of precision micropower shunt voltage references, which includes models with outputs of 2.048 V, 2.5 V, 4.096 V, and 5.0 V. The family shares common features such as band-gap technology, low noise, and fast settling times. The ARTZ suffix indicates the SOT-23-3 surface-mount package option.

Replacement Considerations

The LM4040 is explicitly listed as a pin-compatible alternative in official documentation. Designers should verify that the substitute meets the specific accuracy, temperature coefficient, and current requirements of the original design.