ADR425AR-REEL7

Overview

The ADR425AR-REEL7 is a second-generation XFET voltage reference with a fixed 5.00 V output, ±0.12% initial accuracy, and 3 ppm/°C temperature coefficient. It operates within a 7 V to 18 V input range, drawing a maximum of 0.5 mA quiescent current while delivering up to 10 mA load current. The device features 3.4 µV p-p noise (0.1 Hz to 10 Hz), 70 ppm/mA load regulation, and 35 ppm/V line regulation. It functions across an extended industrial temperature range of −40°C to +125°C in an 8-lead SOIC package.

Feature Summary

• Utilizes patented XFET architecture for superior thermal hysteresis and low noise compared to bandgap references.
• Includes a dedicated trim terminal allowing ±0.5% output voltage adjustment without compromising other performance metrics.
• Offers indefinite short-circuit protection capability when connected directly to ground.

Applications

• Precision data acquisition systems
• High resolution converters
• Portable medical instruments
• Optical network control circuits

Procurement Notes

Verify the specific suffix 'AR' corresponds to the 8-lead SOIC package variant rather than MSOP. Confirm that the '-REEL7' designation indicates tape-and-reel packaging suitable for automated surface-mount assembly processes. Ensure the component grade matches the required initial accuracy specifications for the target application.

Selection Notes

Select this component when a stable 5 V reference is required with minimal supply headroom constraints. The wide operating input range supports various power architectures. Consider the XFET technology benefits for applications demanding low drift and high long-term stability over standard bandgap alternatives.

Part Context

This part belongs to the ADR42x series of ultraprecision voltage references manufactured by Analog Devices. The series includes variants with different nominal outputs such as 2.048 V, 2.5 V, and 3.0 V, all sharing the same core XFET technology and package options.

Replacement Considerations

ADR425ARMZ

FAQ

How does the XFET technology differ from bandgap references?

XFET technology utilizes junction field-effect transistors with extra channel implants, resulting in significantly lower noise and better thermal hysteresis compared to traditional bandgap references.

What is the function of Pin 5 (TRIM)?

Pin 5 is the trim terminal used to adjust the output voltage over a ±0.5% range without affecting the temperature coefficient or other performance characteristics.