AD8671AR

Overview

The AD8671AR is a single-channel precision operational amplifier manufactured by Analog Devices Inc. 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 3 mA per amplifier. The unit is unity-gain stable, exhibits no phase reversal, and maintains stability with capacitive loads exceeding 1000 pF. It is housed in an 8-lead SOIC package and functions within an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Extremely low voltage noise density for high-fidelity signal processing
• Low input bias current ensuring minimal loading on high-impedance sources
• Unity-gain stability without output phase reversal during overdrive conditions
• Capacitive load drive capability exceeding 1000 pF without external compensation

Applications

• PLL synthesizers and loop filters
• GPS receiver band-pass and low-pass filters
• Precision instrumentation and data acquisition systems
• Professional quality audio circuits

Procurement Notes

Verify the specific ordering suffix to confirm package type and RoHS compliance status. Ensure the procurement channel provides valid manufacturer documentation matching the AD8671AR designation. Confirm that the delivered components match the specified 8-lead SOIC physical dimensions and marking codes. Validate that the supplier guarantees authenticity through authorized distribution channels.

Selection Notes

Select this component when circuit requirements demand ultralow noise combined with high precision and wide bandwidth. It is suitable for applications requiring operation with significant capacitive loads while maintaining stability. Consider its low power consumption relative to its performance metrics. Verify that the required operating temperature range aligns with the extended industrial specifications provided.

Part Context

The AD8671AR belongs to the AD8671/AD8672/AD8674 family of precision amplifiers designed by Analog Devices. This series integrates ultralow noise, high speed, and exceptional stability into a single architecture. The AD8671 represents the single-channel variant within this lineup, sharing core electrical characteristics with its dual and quad counterparts while offering distinct pin configurations suited for compact designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the source material.