ADR440ARMZ-REEL7

Overview

The ADR440ARMZ-REEL7 is an ultralow noise, LDO XFET voltage reference 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 features a temperature coefficient of 10 ppm/°C and operates over an extended industrial temperature range from -40°C to +125°C. It supports a supply voltage input range of 3 V to 18 V with a minimum dropout headroom of 500 mV. The component can source up to 10 mA and sink up to 5 mA of load current while consuming a typical quiescent current of 3.75 mA.

Feature Summary

• Utilizes XFET technology for ultralow noise performance and minimal temperature drift curvature correction.
• Features low dropout operation requiring only 500 mV of supply voltage headroom above the output voltage.
• Includes a dedicated trim terminal allowing output voltage adjustment over a 0.5% range without compromising performance.

Applications

• Precision data acquisition systems
• High resolution data converters
• Battery-powered instrumentation
• Portable medical instruments

Procurement Notes

Verify the specific package suffix 'RM' corresponds to the MSOP-8 form factor required for your PCB layout. Confirm that the 'REEL7' designation matches your automated assembly equipment specifications. Ensure the A grade electrical parameters meet your system's accuracy requirements before finalizing procurement.

Selection Notes

Select this component when high precision and low noise are critical in signal conditioning chains. The ADR440ARMZ-REEL7 is suitable for applications requiring stable references under varying load conditions. Consider the 10 ppm/°C temperature coefficient for environments with significant thermal fluctuations.

Part Context

This part belongs to the ADR440/ADR441/ADR443/ADR444/ADR445 family of XFET voltage references. These devices share common architectural features including low dropout capabilities and current sink/source functionality. The family offers various output voltages and grades, with the ADR440 specifically providing a 2.048 V output option.

Replacement Considerations

Other members of the ADR44x family may serve as alternatives if different output voltages or accuracy grades are acceptable. Verify pin compatibility and thermal characteristics when substituting with other packages within the same series.