AD8628ARTZ-REEL7

Overview

The AD8628ARTZ-REEL7 is a single-channel, zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output swing and operates on a single supply voltage ranging from 2.7 V to 5 V. The device exhibits an ultralow offset voltage of 1 µV with a drift of 0.002 µV/°C. It provides a gain bandwidth product of 2.5 MHz and a slew rate of 1 V/µs. Input bias current is typically 30 pA, with a maximum of 100 pA. Supply current is approximately 1.0 mA per amplifier. The component is housed in a 5-lead SOT-23 package.

Feature Summary

• Utilizes a patented ping-pong auto-zeroing and chopping topology to eliminate 1/f noise and minimize digital switching artifacts.
• Provides rail-to-rail input and output swing capability without requiring external components or capacitors.
• Designed to prevent output phase reversal when inputs exceed the common-mode range.
• Features rapid overload recovery time due to internal settling within two clock cycles after saturation.

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the AD8628 family includes multiple variants such as SOIC and TSOT. Confirm RoHS compliance status through official manufacturer documentation. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability for automotive-grade specifications if applicable.

Selection Notes

Select this component for applications requiring high DC precision and low noise without external filtering. The device is suitable for systems operating between 2.7 V and 5 V where rail-to-rail performance is necessary. Consider the 5-lead SOT-23 package for space-constrained designs. Evaluate the trade-off between the low offset voltage and the specific bandwidth requirements of the signal chain.

Part Context

This part belongs to the AD8628/AD8629/AD8630 family of zero-drift amplifiers. The AD8628 variant specifically denotes a single-channel configuration. The 'ARTZ' designation indicates the commercial temperature grade (-40°C to +125°C) and the SOT-23-5 package option. The '-REEL7' suffix specifies the tape and reel packaging format containing 3000 units.

Replacement Considerations

Direct substitutes within the same family include AD8628ARZ (SOIC-8) and AD8628AUJZ (TSOT-5). Automotive qualified versions are available as AD8628WARTZ. Verify pin compatibility and thermal characteristics when transitioning between different package types in existing designs.

FAQ

Does the AD8628 exhibit output phase reversal?

No, the AD8628 is designed to prevent output phase reversal provided that both inputs are maintained within the supply voltages.

How does the AD8628 handle 1/f noise?

The device internally eliminates 1/f noise through its auto-zeroing mechanism, which corrects slowly varying offsets at the inputs.

What is the overload recovery behavior of this amplifier?

Internal settling occurs within two clock cycles after output saturation, resulting in a short recovery time compared to other auto-zero amplifiers.