ADR435ARZ

Overview

The ADR435ARZ is a series voltage reference from the XFET family, manufactured by Analog Devices Inc. It provides a fixed output of 5.0 V with an initial accuracy of ±6 mV (±0.12%) and a maximum temperature coefficient of 10 ppm/°C. The device operates within a supply voltage range of 7.0 V to 18 V, requiring a minimum headroom of 2 V. It features a quiescent current of 800 µA, sourcing up to 30 mA and sinking up to −20 mA. Low-frequency noise is specified at 8 µV p-p from 0.1 Hz to 10 Hz. The component is housed in an 8-lead SOIC package and functions across an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Utilizes XFET technology for low noise and minimal thermal drift curvature correction.
• Capable of sourcing 30 mA and sinking 20 mA without external components.
• Includes a dedicated trim terminal for adjusting output voltage within a ±5% range.
• Requires no external bypass capacitor for stable operation.

Applications

• Precision data acquisition systems
• High resolution data converters
• Medical instruments
• Industrial process control systems

Procurement Notes

Verify the specific suffix 'ARZ' corresponds to the standard tube packaging configuration rather than reel variants like REEL7. Confirm that the A-grade specification aligns with project requirements for the 10 ppm/°C temperature coefficient. Ensure the 8-lead SOIC footprint matches the PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this model when a 5.0 V reference is required with high current drive capabilities. The A-grade version offers sufficient precision for general instrumentation. Consider the B-grade variant if lower temperature coefficients are necessary. Verify input voltage stability to ensure it remains above the 7.0 V minimum threshold during all operating conditions.

Part Context

This component belongs to the ADR43x series of ultralow noise XFET voltage references. It shares architectural similarities with the ADR430, ADR431, ADR433, and ADR434 models, differing primarily in its fixed 5.0 V output setting and corresponding input voltage requirements. The series utilizes proprietary junction FET technology to achieve performance levels typically associated with more complex or costly buried Zener references.

Replacement Considerations

ADR435BRZ