ADR430ARZ

Overview

The ADR430ARZ is a precision series voltage reference from the XFET family, manufactured by Analog Devices Inc. It provides a fixed output voltage of 2.048 V with an initial accuracy of ±0.15% (A Grade). The device operates within a supply voltage range of 4.1 V to 18 V and requires a minimum headroom of 2 V. Key electrical parameters include a maximum temperature coefficient of 10 ppm/°C, quiescent current of 800 µA, and output current capability of +30 mA sourcing and -20 mA sinking. It features low noise performance of 3.5 µV p-p in the 0.1 Hz to 10.0 Hz band.

Feature Summary

• Utilizes XFET technology for ultralow noise and minimized temperature drift nonlinearity
• Capable of sourcing up to 30 mA and sinking up to 20 mA without external components
• Includes a trim terminal allowing output voltage adjustment over a ±0.5% range
• Operates at low supply current with minimal voltage headroom requirements

Applications

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

Procurement Notes

Verify the specific grade (A or B) required for your application, as the base part number may denote different accuracy levels. Confirm the package type matches your PCB footprint, as this model typically utilizes an 8-lead SOIC_N package. Ensure the input voltage supply meets the minimum operating range of 4.1 V relative to the 2.048 V output. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select the ADR430ARZ when a stable 2.048 V reference is needed with high current drive capabilities. Consider the A Grade specifications if a temperature coefficient of 10 ppm/°C is acceptable. Evaluate the need for the TRIM pin if fine-tuning the output voltage is necessary. Compare against buried Zener references if lower supply voltage headroom is a critical design constraint.

Part Context

This component belongs to the ADR43x series of XFET voltage references, which also includes models like ADR431, ADR433, ADR434, and ADR435. These devices share similar architectural features but differ in their fixed output voltages and minimum operating input voltages. The series is designed to replace traditional bandgap and buried zener references in applications requiring superior noise performance and stability.

Replacement Considerations

Direct functional substitutes within the same family include ADR431ARZ (2.5 V), ADR433ARZ (3.0 V), ADR434ARZ (4.096 V), and ADR435ARZ (5.0 V). For identical voltage but different grades, check ADR430BRZ for tighter temperature coefficients. Verify pin compatibility and thermal resistance characteristics when swapping packages.