ADR433ARZ-REEL7

Voltage Reference Overview

The ADR433ARZ-REEL7 is a precision voltage reference from the ADR43x series, manufactured by Analog Devices Inc. It provides a nominal output voltage of 3.0 V and operates within an input supply range of 5.0 V to 18 V. The device features low quiescent current consumption of 800 µA and supports high output source and sink currents up to 30 mA and -20 mA respectively. It utilizes XFET technology to achieve low noise performance and low temperature drift. The component is housed in an 8-lead SOIC package and is specified for operation across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Utilizes XFET technology for low noise and low temperature drift performance
• Capable of sourcing up to 30 mA and sinking up to -20 mA output current
• Includes a trim terminal for adjusting output voltage without compromising performance
• Requires no external capacitor for stable operation

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific grade (A or B) required for your application, as initial accuracy and temperature coefficient specifications vary between grades. Confirm that the REEL7 suffix matches your automated assembly requirements. Ensure the input voltage headroom meets the minimum 2 V requirement relative to the 3.0 V output. Check for availability constraints as distribution status may be limited.

Voltage Reference Selection Notes

Select this component when a 3.0 V reference with high current drive capability is needed. Consider the A grade if tighter initial accuracy is not critical but lower cost is preferred. Verify that the system input voltage stays within the 5.0 V to 18 V operating range. Evaluate thermal resistance values if power dissipation is a concern in the SOIC-8 package.

Voltage Reference 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 including low supply current and high output drive capability. The ADR433 specifically targets applications requiring a 3.0 V reference level, distinguishing it from other members of the series that offer voltages ranging from 2.048 V to 5.000 V.

Voltage Reference Replacement Considerations

Direct replacements within the same family include ADR433ARZ (tube packaging) or ADR433BRZ (B grade). Cross-family comparisons should consider similar XFET or buried Zener references from Analog Devices, ensuring pin compatibility and electrical parameter alignment.