AD8672AR

Overview

The AD8672AR is a dual-channel precision operational amplifier from Analog Devices, housed in an 8-lead SOIC package. It operates within an extended industrial temperature range of -40°C to +125°C and supports dual-supply voltages from ±5 V to ±15 V. Key electrical specifications include a maximum offset voltage of 75 μV, a typical supply current of 3 mA per amplifier, and a gain bandwidth product of 10 MHz. The device features very low noise characteristics with a density of 2.8 nV/√Hz at 1 kHz and peak-to-peak noise of 77 nV from 0.1 Hz to 10 Hz. It maintains high open-loop gain (minimum 120 dB) and unity-gain stability without phase reversal.

Feature Summary

• Very low input noise density and low offset voltage for high precision signal conditioning
• Low input bias current minimizes loading effects on high-impedance source circuits
• Unity-gain stable operation with no output phase reversal during overdrive conditions
• Capacitive load stability allows driving loads exceeding 1000 pF without external compensation

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel configuration. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Confirm that the operating temperature range aligns with your system's environmental constraints before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring extremely low voltage noise combined with low input bias current. It is suitable for applications demanding high DC accuracy and wide bandwidth. Consider the power dissipation and thermal resistance characteristics if operating at elevated ambient temperatures or high supply voltages.

Part Context

This part belongs to the AD8671/AD8672/AD8674 family of precision amplifiers designed by Analog Devices. The series offers unmatched combinations of ultralow noise, high precision, speed, and stability. While the AD8672 provides two channels in an 8-lead package, the family also includes single-channel and quad-channel variants to accommodate different board space and channel count requirements.

Replacement Considerations

Public confirmed substitute part numbers: AD8672ARMZ, AD8672ARZ.