AD8671ARZ

Overview

The AD8671ARZ is a single-channel precision operational amplifier manufactured by Analog Devices. It features very low noise of 2.8 nV/√Hz and low input bias current with a maximum of 12 nA. The device offers a gain bandwidth product of 10 MHz, a slew rate of 4 V/µs, and a minimum open-loop gain of 120 dB. It operates on dual supplies ranging from ±5 V to ±15 V with a supply current of approximately 3 mA per amplifier. The unit is unity-gain stable, exhibits no phase reversal, and maintains stability with capacitive loads exceeding 1000 pF.

Feature Summary

• Very low voltage noise density for high signal integrity
• Low input bias current minimizing loading effects
• Unity-gain stability without output phase reversal
• Capacitive load drive capability exceeding 1000 pF

Applications

• PLL filters
• Filters for GPS
• Instrumentation
• Sensors and controls
• Professional quality audio

Procurement Notes

Verify the package type matches the required PCB footprint, as the ARZ suffix indicates an 8-lead SOIC_N package. Confirm RoHS compliance status if environmental regulations apply to the assembly process. Ensure the operating temperature range aligns with the specified extended industrial limits of −40°C to +125°C. Cross-reference the datasheet revision to confirm electrical characteristics have not changed since the initial release.

Selection Notes

Select this component when ultralow noise and high precision are critical requirements. The combination of low offset voltage and wide bandwidth suits applications demanding both DC accuracy and AC performance. Consider the power dissipation and thermal resistance if operating at high ambient temperatures or with significant load currents. Verify that the supply voltage range fits within the specified ±5 V to ±15 V limits for optimal performance.

Part Context

The AD8671ARZ belongs to the AD8671/AD8672/AD8674 series of precision amplifiers designed by Analog Devices. This family shares core electrical characteristics but differs in channel count, with the AD8671 being the single-channel variant. The series is engineered to provide unmatched combinations of low noise, high speed, and stability for demanding analog signal processing tasks.

Replacement Considerations

The AD8671ARMZ serves as a pin-compatible alternative offering the same electrical specifications in an 8-lead MSOP package.