ADR430ARZ-REEL7

Overview

The ADR430ARZ-REEL7 is a precision voltage reference from the Analog Devices XFET series, housed in an 8-lead SOIC package. It provides a nominal output voltage of 2.048 V with a maximum temperature coefficient of 10 ppm/°C for the A grade. The device operates within a supply voltage range of 4.1 V to 18 V and draws a typical quiescent current of 800 µA. It supports sourcing up to 30 mA and sinking up to -20 mA of load current. The unit functions reliably across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes XFET technology to minimize voltage change versus temperature nonlinearity.
• Features a dedicated trim terminal allowing output voltage adjustment over a ±0.5% range without compromising performance.
• Capable of high output source and sink currents to drive demanding loads directly.

Applications

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

Procurement Notes

Verify the specific grade (A or B) required for your application, as the datasheet distinguishes between 10 ppm/°C and 3 ppm/°C temperature coefficients. Confirm that the SOIC-8 package aligns with your PCB footprint requirements. Ensure the input voltage stays within the 4.1 V to 18 V operating range to maintain specified regulation characteristics.

Selection Notes

Select this component when low noise and high accuracy are critical for signal integrity. The XFET architecture offers lower noise than traditional buried Zener references while requiring less supply voltage headroom. Consider the trim pin if precise voltage calibration is needed post-manufacturing. Evaluate thermal dissipation if operating near maximum load currents.

Part Context

This part belongs to the ADR430/ADR431/ADR433/ADR434/ADR435 family of ultralow noise XFET voltage references. These devices share common architectural features but differ in nominal output voltages and minimum input voltage requirements. The ADR430 specifically targets applications requiring a 2.048 V reference level.

FAQ

Does the ADR430 require an external capacitor for stability?

No external capacitor is required for basic operation, though a compensation network can be connected to the COMP pin to reduce overall noise.

What is the function of the TRIM pin?

The TRIM pin allows the user to adjust the output voltage over a ±0.5% range to compensate for system-level errors.