ADR425ARMZ-REEL7

Overview

The ADR425ARMZ-REEL7 is a 5.00 V XFET voltage reference in an 8-lead MSOP package. It provides B Grade accuracy with ±0.04% initial error and a 3 ppm/°C temperature coefficient. The device operates from 7 V to 18 V, drawing 500 µA quiescent current while delivering up to 10 mA output. Key electrical parameters include 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 within a −40°C to +125°C range.

Feature Summary

• Utilizes second-generation eXtra implanted junction FET technology for superior thermal hysteresis and low noise compared to band gap references.
• Features a dedicated trim terminal allowing output voltage adjustment over a ±0.5% range without compromising other performance metrics.
• Offers extended industrial operating temperature range and high long-term stability.

Applications

• Precision data acquisition systems
• High resolution converters
• Battery-powered instrumentation
• Portable medical instruments
• Optical network control circuits

Procurement Notes

Verify the specific suffix 'REEL7' indicates reel packaging when sourcing. Confirm the 'B' grade designation matches the required ±0.04% initial accuracy and 3 ppm/°C temperature coefficient specifications. Ensure the 8-lead MSOP footprint aligns with the PCB layout requirements.

Selection Notes

Select this component for applications requiring low noise and high precision in a compact surface-mount package. The 7 V minimum input voltage requires sufficient headroom relative to the 5 V output. Consider the trim pin if system-level calibration is necessary to offset initial errors.

Part Context

This part belongs to the ADR42x series of ultraprecision voltage references. It shares the same core XFET architecture and pinout as the ADR420, ADR421, and ADR423 models, differing primarily in the nominal output voltage level.

Replacement Considerations

ADR425ARZ

FAQ

Can the output voltage be adjusted?

Yes, the TRIM pin allows adjustment of the output voltage over a ±0.5% range without affecting the temperature coefficient.

Is an output capacitor required for stability?

No, the ADR42x does not require an output capacitor for stability under any load condition, though one can be added to filter noise.