AD8572ARZ

Overview

The AD8572ARZ is a dual 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. The device provides an ultralow offset voltage of 1 μV with a drift of 0.005 μV/°C, ensuring high precision across the industrial temperature range of -40°C to +125°C. Key electrical characteristics include a typical gain of 145 dB, a common-mode rejection ratio (CMRR) of 140 dB, and a power supply rejection ratio (PSRR) of 130 dB. It consumes approximately 850 μA per amplifier channel and delivers an output current of up to 30 mA.

Feature Summary

• Utilizes spread-spectrum auto-zero technology to eliminate intermodulation distortion without requiring external capacitors.
• Features rail-to-rail input and output swings for maximum dynamic range in single-supply applications.
• Provides ultralow offset voltage and drift for high-accuracy signal conditioning.
• Includes internal overload recovery mechanisms and short-circuit protection.

Applications

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

Procurement Notes

Verify the specific package suffix 'R' corresponds to the 8-lead narrow SOIC configuration required for your PCB layout. Confirm that the operating environment stays within the specified -40°C to +125°C temperature range to maintain guaranteed performance specifications. Ensure supply voltages do not exceed the absolute maximum ratings to prevent device damage.

Selection Notes

Select this component when high DC precision and low drift are critical requirements. It is suitable for applications demanding rail-to-rail signal handling with minimal external compensation components. Consider the 8-lead SOIC package constraints regarding thermal resistance and board space compared to TSSOP alternatives if pin compatibility is a factor.

Part Context

The AD8572ARZ belongs to the AD857x family of zero-drift amplifiers, which includes single (AD8571), dual (AD8572), and quad (AD8574) variants. This family shares identical core architecture and electrical performance characteristics, differing primarily in the number of integrated channels and physical package configurations available for system integration.

Replacement Considerations

The AD8572AR-REEL7 is a reel-packaged version of the same device. Other family members like the AD8571ARZ (single channel) or AD8574ARZ (quad channel) share the same electrical specifications but differ in channel count and pinout usage.