AD8572AR-REEL

Overview

The AD8572AR-REEL is a dual-channel, zero-drift operational amplifier manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.7 V to 5 V and features rail-to-rail input and output capabilities. Key electrical specifications include a maximum offset voltage of 10 μV across the temperature range, an input bias current of up to 4 nA at maximum temperature, and a gain-bandwidth product of 1 MHz at 2.7 V or 1.5 MHz at 5 V. The device provides high common-mode rejection ratio (CMRR) of 130 dB typical and power supply rejection ratio (PSRR) of 130 dB typical. It is housed in an 8-lead SOIC package.

Feature Summary

• Utilizes spread-spectrum auto-zero technology to eliminate intermodulation distortion effects in AC applications.
• Features rail-to-rail input and output swing for compatibility with low-voltage single-supply systems.
• Provides ultralow input bias current and minimal offset voltage drift over the extended industrial temperature range.

Applications

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

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging when sourcing. Confirm that the 'R' suffix corresponds to the 8-lead narrow SOIC package variant. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Check for any obsolescence notices as this part may have limited availability compared to newer revisions.

Selection Notes

Select this component for applications requiring high DC precision without external capacitors. It is suitable for environments where low drift and high CMRR are critical. Consider the 8-lead SOIC package constraints regarding thermal resistance and board space. Evaluate the supply current consumption against system power budgets, noting it varies slightly with supply voltage.

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 similar architectural benefits, including chopper stabilization and rail-to-rail performance. The AD8572 specifically offers two independent channels in a compact surface-mount package, making it ideal for multi-channel signal conditioning tasks.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the AD8571 (single channel) and AD8574 (quad channel). Other Analog Devices zero-drift amplifiers may require schematic adjustments due to differing pinouts or electrical characteristics. Verify package compatibility before substitution.