ADR5040WARTZ-R7

Overview

The ADR5040WARTZ-R7 is a precision micropower shunt mode voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 2.048 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. It is housed in a surface-mount SOT-23-3 package and is qualified for automotive applications.

Feature Summary

• Designed for space-critical applications using ultracompact SOT-23 packaging
• Qualified for automotive applications with controlled manufacturing standards
• Operates without requiring an external compensation capacitor
• Features low temperature drift and fast settling time

Applications

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

Procurement Notes

Verify the specific grade (A or B) and suffix requirements against the official Analog Devices ordering guide before procurement. Confirm that the automotive qualification aligns with project reliability standards. Ensure the SOT-23-3 footprint matches the PCB layout design. Check for any product change notifications that may affect specifications or pin configurations prior to finalizing orders.

Selection Notes

Select this component when a precise 2.048 V reference is required in a small form factor. The Grade A specification offers ±0.2% accuracy suitable for general precision tasks. The wide operating current range allows flexibility in bias resistor selection. Consider stacking multiple units if higher voltages are needed, keeping in mind that errors accumulate in series configurations.

Part Context

This part belongs to the ADR504x family of high-precision shunt voltage references. The 'W' suffix indicates automotive qualification, while 'ARTZ' specifies the SOT-23-3 package and RoHS compliance. The 'R7' denotes reel packaging. Other family members include different output voltages like 2.5 V, 3.0 V, 4.096 V, and 5.0 V, as well as SC70 package options.

Replacement Considerations

The datasheet notes pin compatibility with LM4040 and LM4050 devices. Designers should verify electrical parameters such as temperature coefficient and operating current limits when substituting these parts. Ensure the replacement supports the required automotive qualification if applicable.