AD8551ARMZ-REEL

Overview

The AD8551ARMZ-REEL is a single-channel, zero-drift operational amplifier from Analog Devices Inc., featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 2.7 V to 5 V. Key electrical specifications include a typical offset voltage of 1 μV with a drift of 0.005 μV/°C, ultralow input bias current of 20 pA, and high gain, CMRR, and PSRR of 130 dB. The device draws 700 μA per amplifier and offers an overload recovery time of 50 μs without requiring external capacitors.

Feature Summary

• Zero-drift architecture utilizing auto-zero stabilization for submicrovolt offset voltage and minimal temperature drift.
• Rail-to-rail input and output swing enabling full signal utilization across the entire supply voltage range.
• Ultralow input bias current and offset voltage suitable for high-impedance sensor interfaces.
• Single-supply operation from 2.7 V to 5 V with no external capacitors required for stability.

Applications

• Temperature sensors
• Pressure sensors
• Precision current sensing
• Strain gage amplifiers
• Medical instrumentation

Procurement Notes

Verify the specific package type and reel quantity associated with the REEL suffix against the manufacturer's official ordering guide. Confirm that the component meets the extended industrial/automotive temperature range requirements if operating in harsh environments. Ensure compatibility with single-supply systems within the 2.7 V to 5 V specification limits before integration.

Selection Notes

Select this component for applications demanding high precision with minimal drift over wide temperature ranges. The rail-to-rail I/O makes it ideal for low-voltage single-supply designs where maximizing dynamic range is critical. Consider the 700 μA supply current for power-sensitive portable devices. Verify layout requirements for guard rings to maintain the specified ultralow bias current performance.

Part Context

This part belongs to the AD8551/AD8552/AD8554 family of zero-drift, single-supply, rail-to-rail operational amplifiers. The AD8551 denotes the single-amplifier configuration, while AD8552 and AD8554 represent dual and quad variants respectively. All members share the same core auto-zero topology and electrical characteristics, differing primarily in channel count and package options.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult the manufacturer's documentation for potential cross-references or updated revisions.