ADR520ARTZ-REEL7

Overview

The ADR520ARTZ-REEL7 is a high precision shunt voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 2.048 V with an initial accuracy of ±0.4% and a maximum temperature coefficient of 70 ppm/°C. The device operates within a current range of 50 μA to 15 mA and features ultralow noise characteristics. Designed for space-critical applications, it is housed in a 3-Lead SOT-23-3 package and supports an industrial operating temperature range from -40°C to +85°C.

Feature Summary

• Ultracompact packaging in 3-Lead SOT-23-3 format suitable for space-constrained designs
• Pin compatible with LM4040/LM4050 devices for direct replacement
• Eliminates the need for external compensation capacitors while maintaining stability with any capacitive load

Applications

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

Procurement Notes

Verify the specific grade suffix (ART) against the datasheet ordering guide to confirm the 2.048 V output voltage, ±0.4% initial accuracy, and 70 ppm/°C temperature coefficient specifications. Ensure the REEL7 suffix matches the required tape and reel quantity for manufacturing integration. Confirm RoHS compliance status via the Z suffix designation if environmental regulations apply to the assembly process.

Selection Notes

Select this component when a compact shunt reference is required that maintains stability without external capacitors. The 2.048 V output is standard for ADC/DAC references. Verify that the system bias resistor allows the current to remain between 50 μA and 15 mA across all supply and load conditions. Consider the 70 ppm/°C drift if higher precision than Grade B parts offers.

Part Context

This part belongs to the ADR52x series of high precision shunt voltage references from Analog Devices. The series includes variants with outputs ranging from 2.048 V to 5.0 V. These devices utilize band gap concepts to achieve low temperature coefficients and are designed for handheld and battery-powered applications due to their low minimum operating current.

Replacement Considerations

LM4040 and LM4050

FAQ

Does the ADR520 require an external capacitor for stability?

No, the advanced design eliminates the need for an external capacitor, though the device remains stable with any capacitive load.

What is the function of the TRIM terminal on this device?

The trim terminal allows adjustment of the output voltage over a ±0.5% range to compensate for system errors without affecting the temperature coefficient.