AD8630ARZ-REEL

Overview

The AD8630ARZ-REEL is a quad zero-drift operational amplifier from Analog Devices, housed in a 14-lead SOIC package. It features rail-to-rail input and output swings with operation specified from 2.7 V to 5 V single supply. Key electrical parameters include a typical offset voltage of 1 µV, maximum input bias current of 300 pA, and gain bandwidth product of 2.5 MHz at 5 V. The device offers low noise density of 22 nV/√Hz at 1 kHz and high common-mode rejection ratio of 140 dB.

Feature Summary

• Patented auto-zeroing and chopping topology eliminates 1/f noise and minimizes digital switching artifacts.
• Rail-to-rail input and output capability maximizes signal-to-noise ratio while reducing input biasing complexity.
• Ultralow offset voltage and drift ensure high precision across the extended industrial temperature range.
• Fast overload recovery time allows stable performance when driving switched capacitor loads.

Applications

• Automotive sensors
• Pressure and position sensors
• Strain gage amplifiers
• Medical instrumentation
• Thermocouple amplifiers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and packing quantity. The REEL suffix indicates tape and reel packaging. Confirm RoHS compliance status and automotive qualification requirements if applicable to your design specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring high DC precision without external trimming. The quad configuration reduces board space compared to individual dual or single amplifiers. Ensure the system operates within the 2.7 V to 5 V supply range and consider the 14-lead SOIC footprint during PCB layout.

Part Context

This part belongs to the AD8628/AD8629/AD8630 family of zero-drift amplifiers. While sharing core technology, the AD8630 specifically provides four independent channels in a 14-lead package, distinguishing it from the single-channel AD8628 and dual-channel AD8629 variants.

Replacement Considerations

Direct functional substitutes within the same family include AD8630ARUZ (TSSOP package) and AD8630WARZ (automotive qualified). Verify pin compatibility and thermal characteristics when transitioning between package types.

FAQ

Does the AD8630 exhibit output phase reversal?

No, the AD8630 is designed to prevent output phase reversal provided that both inputs are maintained within the supply voltages.

What is the mechanism for eliminating 1/f noise?

The internal auto-zeroing function corrects DC and low-frequency offsets, effectively removing the 1/f noise component from the signal path.