AD8574AR-REEL7

Overview

The AD8574AR-REEL7 is a quad zero-drift 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 input offset voltage of 10 μV across the temperature range and an input bias current of up to 1.5 nA. The device offers a gain bandwidth product of 1 MHz at 2.7 V and 1.5 MHz at 5 V, with a typical large signal voltage gain of 145 dB. It is housed in a 14-lead SOIC package.

Feature Summary

• Utilizes spread-spectrum auto-zero technology to eliminate intermodulation distortion effects common in chopper-stabilized amplifiers.
• Provides rail-to-rail input and output swing capability for maximum dynamic range within the supply voltage limits.
• Features ultralow input bias current and extremely low offset voltage drift over the operating temperature range.
• Requires no external capacitors for stabilization or operation.

Applications

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

Procurement Notes

Verify the specific ordering suffix AR-REEL7 against the manufacturer's official documentation to confirm the reel packaging format and tape specifications. Ensure compatibility with the 14-lead SOIC footprint during PCB layout. Confirm that the component meets all environmental and compliance requirements relevant to the target application before finalizing procurement.

Selection Notes

Select this component when high DC precision and low drift are critical, particularly in single-supply systems. The quad configuration allows for multiple signal conditioning channels in a compact footprint. Consider the 14-lead SOIC package constraints and verify that the load requirements do not exceed the specified short-circuit current limits for the desired output swing performance.

Part Context

This part belongs to the AD857x family of zero-drift amplifiers, which includes the single-channel AD8571 and dual-channel AD8572 variants. All members share the same core architecture and electrical characteristics but differ in channel count and package options. The AD8574 specifically provides four independent amplifiers in a single integrated circuit.

Replacement Considerations

Direct functional substitutes within the same family include the AD8571 and AD8572, provided the channel count matches the design requirements. Verify pinout compatibility and package dimensions when substituting between different package types such as TSSOP or MSOP.