AD8574ARZ-REEL7

Overview

The AD8574ARZ-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 typical gain bandwidth product of 1.5 MHz, an input offset voltage of 1 μV, and an input bias current of 10 pA. The device provides high open-loop gain of 145 dB, with common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) both at 130 dB typical. It functions within an extended temperature range of -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 on single supplies.
• Provides ultralow offset voltage and drift characteristics without requiring external capacitors.

Applications

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

Procurement Notes

Verify the specific package type and reel configuration against the official datasheet before procurement. Confirm that the operating environment stays within the specified voltage and temperature limits. Ensure proper handling procedures are followed due to ESD sensitivity. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when high DC precision and low drift are critical requirements. It is suitable for applications needing rail-to-rail performance on low-voltage single supplies. Consider the quad configuration for space-constrained designs requiring multiple channels. Evaluate the 1.5 MHz bandwidth against signal frequency requirements to ensure adequate speed.

Part Context

This part belongs to the AD857x family of zero-drift amplifiers, which includes single (AD8571), dual (AD8572), and quad (AD8574) variants. All members share similar core technologies, including CMOS architecture and random frequency auto-zero stabilization. The AD8574 specifically integrates four independent amplifiers in a single package.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the AD8571 and AD8572, though channel counts differ. Verify functional equivalence for specific circuit requirements when considering these alternatives.

FAQ

Does the AD8574 require external capacitors for operation?

No, the AD8574 does not require external capacitors as it utilizes an internal auto-zero correction mechanism.

What is the input offset voltage drift specification?

The input offset voltage drift is typically 0.005 μV/°C over the operating temperature range.