AD8574ARUZ-REEL

Overview

The AD8574ARUZ-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 specifications include a maximum offset voltage of 10 μV across the temperature range, an input bias current of 1.5 nA at maximum temperature, and a gain bandwidth product of 1.5 MHz. The device provides a typical common-mode rejection ratio of 140 dB and power supply rejection ratio of 130 dB. It is housed in a 14-lead TSSOP package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Utilizes spread-spectrum auto-zero technology to eliminate intermodulation distortion effects in AC applications.
• Features rail-to-rail input and output swings for maximum dynamic range operation.
• Provides ultralow offset voltage and drift characteristics suitable for high-precision DC measurements.
• Requires no external capacitors for stabilization due to internal compensation design.

Applications

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

Procurement Notes

Verify that the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the specific lot date code and RoHS compliance status with the distributor prior to purchase. Ensure the ordering quantity matches the reel capacity requirements for the intended production volume.

Selection Notes

Select this component for applications requiring high DC accuracy without external trimming. The quad configuration allows multiple signal paths within a single package footprint. Consider the 1.5 MHz bandwidth limit when designing for higher frequency signals. Verify that the 2.7 V minimum supply voltage aligns with the system power architecture.

Part Context

This part belongs to the AD857x family of zero-drift operational amplifiers, which includes single (AD8571) and dual (AD8572) variants. The AD8574 specifically integrates four independent amplifiers in one package. The family shares identical electrical performance characteristics regarding offset, drift, and noise profiles.

Replacement Considerations

Direct functional substitutes within the same package include the AD8574ARZ and AD8574ARMZ. Verify pin compatibility and thermal resistance values when transitioning between different package suffixes such as SOIC or MSOP alternatives.

FAQ

Does the AD8574 require external capacitors for stability?

No, the AD8574 does not require external capacitors for stability as it is internally compensated.

What is the mechanism used to achieve low offset drift?

The amplifier uses a random frequency auto-zero stabilization technique to correct offset voltage over time and temperature.