AD8574ARU-REEL

Overview

The AD8574ARU-REEL is a quad precision operational amplifier from Analog Devices, 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 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. The device offers high open-loop gain of 145 dB, CMRR of 140 dB, and PSRR of 130 dB. It utilizes a spread-spectrum auto-zero technique to eliminate intermodulation distortion.

Feature Summary

• Zero-drift architecture using random frequency auto-zero stabilization for low offset voltage and drift
• Rail-to-rail input and output swing capability across the full supply range
• Spread-spectrum chopping technology 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 RU corresponds to the 14-lead TSSOP configuration as indicated in the datasheet pinout diagrams. Confirm that the REEL suffix matches the required tape and reel packaging format for automated assembly processes. Ensure compatibility with the specified operating temperature range of -40°C to +125°C for your application environment.

Selection Notes

Select this component when high DC precision and low drift are critical requirements. The quad configuration allows multiple channels in a single package, saving board space compared to individual single or dual amplifiers. Consider the 1.5 MHz gain bandwidth product for signal frequencies up to the mid-kilohertz range. Verify that the single-supply operation fits within your system's power constraints.

Part Context

This part belongs to the AD857x family of zero-drift, single-supply, rail-to-rail input/output operational amplifiers. The AD8574 specifically denotes the quad-channel variant, while AD8571 and AD8572 represent single and dual channel versions respectively. All variants share similar electrical characteristics and architectural features.

Replacement Considerations

Direct functional substitutes within the same family include AD8571ARU-REEL (single channel) and AD8572ARU-REEL (dual channel). For quad channel replacements, verify pinout compatibility and electrical specifications against other Analog Devices zero-drift op-amps if cross-brand substitution is necessary.