AD8574TRU-EP-RL

Overview

The AD8574TRU-EP-RL is a quad zero-drift operational amplifier from Analog Devices, designed for single-supply operation between 2.7 V and 5 V. It features rail-to-rail input and output capabilities with an ultralow offset voltage of 1 μV and drift of 0.005 μV/°C. The device utilizes a patented spread spectrum auto-zero technique to eliminate intermodulation distortion. Key electrical characteristics include a typical gain bandwidth product of 1.5 MHz at 5 V, a slew rate of 0.4 V/μs, and a supply current of approximately 750 μA per amplifier. It operates within a military temperature range of −55°C to +125°C.

Feature Summary

• Patented spread spectrum auto-zero technology eliminates intermodulation effects in AC applications.
• Rail-to-rail input and output swing capability for maximum dynamic range.
• Ultralow offset voltage and drift ensure high DC precision.
• Enhanced Product qualification supports defense and aerospace requirements.

Applications

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

Procurement Notes

Verify the specific suffix -RL indicates reel packaging when confirming order details against the manufacturer's ordering guide. Ensure the Enhanced Product (EP) designation aligns with project reliability standards. Confirm that the RU-14 package option matches the PCB footprint design. Validate that the military temperature range specification meets environmental requirements.

Selection Notes

Select this component for applications requiring ultra-low offset and drift without external compensation capacitors. The spread spectrum chopping technique makes it suitable for broadband signals where traditional chopper amps suffer from intermodulation distortion. Consider the 1.5 MHz gain bandwidth and 0.4 V/μs slew rate for signal conditioning needs. Verify power supply constraints fit within the 2.7 V to 5 V operating range.

Part Context

This part belongs to the AD8574-EP Enhanced Product family, specifically tailored for rugged environments. It shares core specifications with the standard AD8574 but includes controlled manufacturing baselines and qualification data. The EP variant ensures one assembly site and one fabrication site for consistency. It is housed in a 14-lead TSSOP package.

Replacement Considerations

Standard AD8574 variants lack the Enhanced Product qualification and military temperature range. Verify if the non-EP version meets the required reliability standards for defense or aerospace use. Check pin compatibility as the package remains identical.