ADR435BRMZ-R7

Overview

The ADR435BRMZ-R7 is a series precision voltage reference from the Analog Devices XFET family, providing a fixed 5.0 V output with B-grade accuracy of ±2 mV (±0.04%). It features a maximum temperature coefficient of 3 ppm/°C and operates within an input voltage range of 7.0 V to 18 V. The device draws a typical quiescent current of 800 µA and supports sourcing up to 30 mA and sinking up to -20 mA. Packaged in an 8-lead MSOP, it functions over an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes XFET technology for low noise performance and minimal thermal drift curvature correction.
• Includes a dedicated trim terminal allowing output voltage adjustment without compromising stability.
• Capable of high output source and sink currents for driving demanding loads directly.

Applications

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

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when confirming order details. Ensure the component matches the MSOP-8 footprint and pinout configuration required by the design. Confirm that the B-grade specifications align with the required initial accuracy and temperature coefficient tolerances for the application.

Selection Notes

Select this part for applications requiring a stable 5 V reference with low noise and high drive capability. The B-grade specification offers tighter accuracy than the A-grade variant. Consider the minimum headroom requirement relative to the supply voltage and load conditions to ensure proper regulation across the full operating temperature range.

Part Context

This component belongs to the ADR430/ADR431/ADR433/ADR434/ADR435 series of ultralow noise XFET voltage references. The family shares common architectural features including low supply current and high output drive capability, differentiated primarily by their fixed output voltages and package options such as MSOP and SOIC.

Replacement Considerations

ADR435ARMZ-R7 provides the same electrical characteristics but with A-grade accuracy specifications.

FAQ

What is the function of Pin 5?

Pin 5 is the TRIM terminal, which allows for external adjustment of the output voltage over a specified range.

How does the XFET technology benefit this reference?

XFET technology minimizes voltage change versus temperature nonlinearity and provides lower noise compared to traditional buried Zener references.