AD8628AUJZ-REEL

Overview

The AD8628AUJZ-REEL is a single-channel zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output swing, operating on a single supply from 2.7 V to 5 V. Key electrical parameters include an offset voltage of 1 µV, input bias current of 30 pA, gain bandwidth product of 2.5 MHz, and supply current of 850 µA. The device provides full-swing output capability and operates within an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes patented auto-zeroing and chopping topology to achieve ultralow offset voltage and drift without external components.
• Provides rail-to-rail input and output swing to maximize signal-to-noise ratio and reduce input biasing complexity.
• Greatly reduces digital switching noise typically found in chopper-stabilized amplifiers.
• Features very low input bias current and eliminates 1/f noise internally for high DC precision.

Applications

• Automotive sensors
• Pressure and position sensors
• Strain gage amplifiers
• Medical instrumentation
• Precision current sensing

Procurement Notes

Verify the specific package type (TSOT-23-5) and reel quantity against project requirements. Confirm that the 'UJ' suffix corresponds to the 5-Lead TSOT package as listed in the manufacturer's ordering guide. Ensure compatibility with the specified 2.7 V to 5 V single-supply operation range before integration.

Selection Notes

Select this component when high DC precision is required in space-constrained designs due to its small TSOT-23-5 package. It is suitable for applications demanding low offset voltage and drift over wide temperature ranges. Consider the 2.5 MHz bandwidth and 1 V/µs slew rate for signal conditioning tasks where low noise and fast recovery are necessary.

Part Context

This part belongs to the AD8628/AD8629/AD8630 family of zero-drift amplifiers. The AD8628 is the single-channel variant, while the AD8629 and AD8630 offer dual and quad channels respectively. All share similar electrical characteristics but differ in channel count and available packages.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD8628ARTZ variants (SOT-23 package). Automotive-grade equivalents are available as AD8628WAUJZ series parts.

FAQ

Does the AD8628 require external capacitors for stabilization?

No, the AD8628 does not require external capacitors for operation or stabilization due to its internal auto-zeroing and chopping topology.

What is the maximum overload recovery time for this amplifier?

The overload recovery time is less than 10 µs, specifically around 6 µs for positive overload and 9 µs for negative overload.