ADR430BRZ-REEL7

Overview

The ADR430BRZ-REEL7 is a precision XFET voltage reference manufactured by Analog Devices Inc., featuring an output voltage of 2.048 V and B-grade initial accuracy of ±1 mV (±0.05%). It operates within a supply voltage range of 4.1 V to 18 V with a minimum headroom of 2 V. The device draws a typical quiescent current of 800 µA and provides high output source and sink currents of 30 mA and -20 mA, respectively. It exhibits a low temperature coefficient of 3 ppm/°C and ultralow noise of 3.5 µV p-p from 0.1 Hz to 10.0 Hz. Available in an 8-lead SOIC package, it functions reliably across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes XFET technology for exceptionally low noise performance without requiring external capacitors.
• Features a trim terminal allowing output voltage adjustment over a ±5% range.
• Capable of sourcing up to 30 mA and sinking up to -20 mA of load current.
• Operates with minimal supply voltage headroom of 2 V.

Applications

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

Procurement Notes

Verify the specific suffix 'REEL7' indicates tape-and-reel packaging when ordering. Confirm that the B-grade designation corresponds to the required 3 ppm/°C temperature coefficient and ±1 mV initial accuracy specifications. Ensure the 8-lead SOIC package type matches the target PCB footprint. Validate compliance with RoHS standards as specified in the manufacturer documentation.

Selection Notes

Select this component for applications demanding low noise and high stability in 5 V systems. Consider the 2 V headroom requirement relative to the input supply voltage. Evaluate the need for the trim function if precise voltage calibration is necessary. Compare against other grades or series members if different output voltages or accuracy levels are required.

Part Context

This part belongs to the ADR430/ADR431/ADR433/ADR434/ADR435 family of XFET voltage references. These devices share common architectural features including low power consumption and high accuracy. The ADR430 variant specifically provides a 2.048 V output, distinguishing it from other family members with different nominal voltages.

Replacement Considerations

Direct substitutes within the same family include ADR430ARZ for A-grade accuracy or ADR430ARMZ for MSOP packaging. Verify pin compatibility and electrical specifications before substitution.

FAQ

Does the ADR430BRZ-REEL7 require an external capacitor?

No, the device does not require an external capacitor for operation.

What is the maximum output short-circuit current?

The device can withstand an indefinite short circuit to ground with a maximum current of 40 mA.