AD8572ARZ-REEL7

Overview

The AD8572ARZ-REEL7 is a dual-channel, zero-drift operational amplifier from Analog Devices. It features rail-to-rail input and output capabilities and operates on a single supply voltage ranging from 2.7 V to 5 V. The device utilizes a spread-spectrum auto-zero technique to eliminate intermodulation distortion while maintaining high precision. Key electrical characteristics include a typical offset voltage of 1 μV, an input bias current of 10 pA, and a gain bandwidth product of 1.5 MHz at 5 V supply. It offers a typical open-loop gain of 145 dB and a common-mode rejection ratio of 140 dB.

Feature Summary

• Zero-drift architecture using random frequency auto-zero stabilization for ultralow offset and drift
• Rail-to-rail input and output swing capability across the full supply range
• Spread-spectrum chopping technique eliminates intermodulation distortion in AC applications
• No external capacitors required for operation

Applications

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

Procurement Notes

Verify the specific package suffix 'R' corresponds to the SOIC-8 footprint required for your PCB layout. Confirm that the 'REEL7' designation matches your automated assembly equipment specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with official distributor catalogs to confirm availability status before finalizing procurement plans.

Selection Notes

Select this component when high DC precision and low drift are critical over a wide temperature range. It is suitable for single-supply systems requiring rail-to-rail signal handling. Consider the 1.5 MHz bandwidth and 400 mV/μs slew rate for dynamic signal requirements. Evaluate the 750 μA per op amp supply current against power constraints in portable or battery-operated designs.

Part Context

This part belongs to the AD857x family of zero-drift amplifiers, which includes single (AD8571), dual (AD8572), and quad (AD8574) configurations. All members share the same core auto-zero technology and electrical performance profile. The family is designed to replace expensive chopper-stabilized amplifiers while offering comparable accuracy without external compensation components.

Replacement Considerations

Direct functional substitutes within the same family include the AD8571ARZ-REEL7 (single channel) and AD8574ARZ-REEL7 (quad channel). Verify pin compatibility if substituting between different channel counts. No other cross-family replacements are confirmed by the provided documentation.