AD8551ARZ-REEL

Overview

The AD8551ARZ-REEL is a single-channel, zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities with a supply voltage range of 2.7 V to 6 V. Key electrical parameters include a typical offset voltage of 1 μV, an input bias current of 20 pA, and a gain-bandwidth product of 1.5 MHz. The device operates within an extended temperature range of -40°C to +125°C and consumes approximately 975 μA per channel.

Feature Summary

• Zero-drift architecture utilizing auto-zero stabilization for ultralow offset voltage and drift
• Rail-to-rail input and output swing capability for maximum dynamic range
• High open-loop gain and rejection ratios exceeding 130 dB
• Ultralow input bias current suitable for high-impedance signal sources

Applications

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

Procurement Notes

Verify the specific package suffix 'R' corresponds to the 8-lead narrow SOIC configuration as indicated in the datasheet pinout diagrams. Confirm that the '-REEL' designation matches the required tape-and-reel packaging format for automated assembly processes. Ensure compatibility with the specified operating temperature range and supply voltage requirements before finalizing procurement orders.

Selection Notes

Select this component when sub-microvolt offset stability is critical over wide temperature variations. The rail-to-rail I/O feature makes it suitable for low-voltage single-supply systems where maximizing signal swing is necessary. Consider the 1.5 MHz bandwidth and slew rate for applications requiring moderate speed alongside high DC precision.

Part Context

This part belongs to the AD855x family of zero-drift amplifiers, which includes dual (AD8552) and quad (AD8554) variants. The series shares identical internal topology and performance characteristics, differing primarily in channel count and package options. The AD8551 specifically provides a single amplifier solution in surface-mount packages.

Replacement Considerations

Direct functional substitutes within the same family include the AD8552 and AD8554, provided the application requires multiple channels. Verify pinout compatibility if substituting between different package types such as MSOP or TSSOP.