AD8628WAUJZ-RL

Overview

The AD8628WAUJZ-RL is a single-channel, zero-drift operational amplifier from Analog Devices, designed for high-precision applications. It features rail-to-rail input and output capabilities with a gain-bandwidth product of 2.5 MHz at 5 V supply. The device exhibits an ultralow offset voltage of 1 µV and an input bias current of 100 pA maximum. Operating on a single supply from 2.7 V to 5 V (or ±1.35 V to ±2.5 V dual), it consumes 1.1 mA. Key specifications include a CMRR of 140 dB, PSRR of 130 dB, and a large signal voltage gain of 145 dB. It is housed in a TSOT-23-5 package and qualified for automotive use.

Feature Summary

• Utilizes patented auto-zero and chopping topology to eliminate 1/f noise and minimize digital switching artifacts.
• Provides rail-to-rail input and output swing to maximize dynamic range without external biasing complexity.
• Delivers extremely low input offset drift over the extended industrial temperature range.
• Features rapid overload recovery time due to optimized internal nulling loop settling.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel quantity. Ensure the component meets AEC-Q100 qualification requirements if intended for automotive deployment. Cross-reference the datasheet revision to validate electrical characteristics prior to integration into final designs.

Selection Notes

Select this component when system design demands minimal DC error sources such as offset voltage and drift. The rail-to-rail I/O capability makes it suitable for low-voltage single-supply systems. Consider the TSOT-23-5 package constraints regarding thermal dissipation and board space availability during layout planning.

Part Context

This part belongs to the AD8628/AD8629/AD8630 family of zero-drift amplifiers. While the AD8629 offers dual channels and the AD8630 provides four channels, the AD8628 is configured as a single-channel unit. The 'W' designation indicates automotive qualification, and the 'RL' suffix specifies the tape and reel packaging format.

Replacement Considerations

MS8628 is documented as pin-to-pin compatible with the AD8628 series. Verify electrical parameter alignment before substitution.