AD8628WAUJZ-R7

Overview

The AD8628WAUJZ-R7 is a single-channel, zero-drift operational amplifier from Analog Devices, featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 2.7 V to 5.5 V or dual supplies of ±1.35 V to ±2.5 V. The device exhibits an ultralow offset voltage of 1 µV with a drift of 0.002 µV/°C across the -40°C to +125°C temperature range. Key electrical parameters include a gain-bandwidth product of 2.5 MHz, a slew rate of 1 V/µs, and a supply current of 1.1 mA. It offers high common-mode rejection (140 dB) and power supply rejection (130 dB), packaged in a compact 5-lead TSOT.

Feature Summary

• Utilizes a patented auto-zeroing and chopping topology to eliminate 1/f noise and minimize digital switching artifacts.
• Provides rail-to-rail input and output swing to maximize signal-to-noise ratio without external biasing components.
• Features extremely low input bias current and offset voltage drift for high DC precision over extended temperature ranges.
• Delivers rapid overload recovery time due to internal settling within two clock cycles after output saturation.

Applications

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

Procurement Notes

Verify the specific package type and automotive qualification status against the official datasheet ordering guide. Confirm that the 'W' suffix denotes automotive grade compliance if required for your application. Ensure the lead configuration matches the 5-lead TSOT outline dimensions provided in the manufacturer's documentation before finalizing procurement.

Selection Notes

Select this component when system requirements demand ultralow offset voltage and minimal drift without the need for external capacitors. It is suitable for applications requiring rail-to-rail performance and high accuracy in harsh environments. Consider the 5-lead TSOT package for space-constrained designs where automotive reliability is necessary.

Part Context

This part belongs to the AD8628/AD8629/AD8630 family of zero-drift, single-supply, rail-to-rail input/output operational amplifiers. The AD8628 variant specifically provides a single amplifier channel. The 'W' designation indicates qualification for automotive applications, while the 'R7' suffix typically denotes reel packaging as specified in the manufacturer's ordering guide.

Replacement Considerations

Direct substitutes within the same series include AD8628AUJZ-R7 and AD8628ARTZ-R7, which share identical electrical characteristics but differ in package type or commercial versus automotive grading. Verify pin compatibility and thermal resistance specifications when transitioning between package variants.