ADR425BRZ-REEL7

Overview

The ADR425BRZ-REEL7 is a second-generation XFET voltage reference providing a fixed 5.00 V output in an 8-lead SOIC package. It features B-grade initial accuracy of ±0.04% and a temperature coefficient of 3 ppm/°C over the −40°C to +125°C range. The device operates with a supply voltage from 7 V to 18 V, drawing a maximum quiescent current of 500 µA while delivering up to 10 mA load current. Key electrical characteristics include 3.4 µV p-p noise (0.1 Hz to 10 Hz), 70 ppm/mA load regulation, and 35 ppm/V line regulation.

Feature Summary

• Utilizes patented eXtra implanted junction FET (XFET) technology for superior accuracy and thermal hysteresis compared to band gap references.
• Features a dedicated trim terminal allowing output voltage adjustment within a ±0.5% range without compromising other performance metrics.
• Offers low noise density and excellent long-term stability suitable for precision conversion applications.

Applications

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

Procurement Notes

Verify the specific suffix 'REEL7' corresponds to the required tape-and-reel packaging configuration when ordering. Confirm that the B-grade electrical specifications meet the design requirements for initial accuracy and temperature coefficient. Ensure the input voltage range supports the minimum headroom requirements specified in the datasheet.

Selection Notes

Select this component for applications requiring a stable 5 V reference with minimal noise and high precision. Consider the 8-lead SOIC footprint for board space constraints. Evaluate the 7 V minimum input requirement against available supply rails to ensure adequate dropout voltage under all operating conditions.

Part Context

This part belongs to the ADR42x series of ultraprecision voltage references manufactured by Analog Devices. The series includes variants with different nominal output voltages such as 2.048 V, 2.500 V, and 3.00 V. All members share the same XFET architecture and package options, differing primarily in their factory-trimmed output voltage levels.

Replacement Considerations

Direct functional substitutes within the same family include ADR425ARZ for MSOP packaging or non-reeled SOIC versions. Cross-family replacements require careful evaluation of noise, accuracy, and pinout compatibility.