AD8672ARZ-REEL

Overview

The AD8672ARZ-REEL7 is a dual-channel precision operational amplifier from Analog Devices, housed in an 8-lead SOIC package. It features a gain bandwidth product of 10 MHz and a slew rate of 4 V/µs. The device exhibits very low voltage noise density of 2.8 nV/√Hz at 1 kHz and peak-to-peak noise of 77 nV between 0.1 Hz and 10 Hz. Maximum input offset voltage is 75 µV with drift up to 0.8 µV/°C across the extended industrial temperature range of −40°C to +125°C. Input bias current is limited to 12 nA maximum. Supply current is typically 3 mA per amplifier, supporting dual supplies from ±5 V to ±15 V.

Feature Summary

• Unity-gain stable operation without output phase reversal when inputs exceed supply rails.
• Capable of driving capacitive loads exceeding 1000 pF without instability.
• Combines ultralow noise characteristics with high open-loop gain for precision signal conditioning.

Applications

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

Procurement Notes

Verify that the ordering suffix REEL7 corresponds to the specific tape and reel packaging configuration required for automated assembly processes. Confirm RoHS compliance status as indicated by the Z suffix in the base part number. Ensure the component matches the 8-lead SOIC physical dimensions specified in the datasheet outline drawings before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring low noise and high precision within the extended industrial temperature range. Consider the 10 MHz bandwidth and 4 V/μs slew rate for mid-frequency signal processing tasks. Evaluate power dissipation calculations based on the thermal resistance of the SOIC package if operating near maximum supply voltages or ambient temperatures.

Part Context

This device belongs to the AD8671/AD8672/AD8674 family of precision amplifiers designed for low noise and low input bias current applications. While the AD8671 is single-channel and the AD8674 is quad-channel, the AD8672 provides two channels in an 8-lead package. All members share similar electrical characteristics regarding noise, bandwidth, and stability profiles.

Replacement Considerations

The AD8672ARZ is a direct pin-compatible alternative within the same series offering identical electrical specifications but potentially different packaging options.

FAQ

Does the AD8672 exhibit output phase reversal?

No, the AD8672 does not exhibit output phase reversal even when the input voltage exceeds the supply rails by 1 V.

What is the maximum capacitive load the device can drive?

The outputs are stable with capacitive loads of over 1000 pF.