AD8628AUJZ-R2

Overview

The AD8628AUJZ-R2 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 (±1.35 V to ±2.5 V dual supply). The device offers an ultralow offset voltage of 1 µV typical and an input bias current of 30 pA typical. It provides a gain-bandwidth product of 2.5 MHz and a slew rate of 1 V/µs. The amplifier draws 850 µA of supply current and is housed in a 5-lead TSOT package.

Feature Summary

• Combines auto-zeroing and chopping technology to eliminate 1/f noise and minimize offset drift over temperature.
• Provides rail-to-rail input and output capability for maximum dynamic range without external biasing components.
• Features very low input bias current and high open-loop gain to reduce measurement errors in precision circuits.

Applications

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

Procurement Notes

Verify the specific ordering suffix R2 against the manufacturer's official documentation to confirm availability status and packaging details. Ensure that the component meets all required electrical specifications for the intended application environment before procurement.

Selection Notes

Select this component when ultralow offset voltage and minimal drift are critical requirements. The rail-to-rail I/O functionality simplifies circuit design by eliminating the need for additional biasing networks. Consider the 5-lead TSOT package size for space-constrained applications.

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, distinguishing it from the dual-channel AD8629 and quad-channel AD8630 models within the same series.

Replacement Considerations

Direct replacements include other AD8628 variants such as AD8628AUJZ-REEL or AD8628AUJZ-REEL7, which share identical electrical characteristics but may differ in packaging quantity or automotive qualification status.

FAQ

Does the AD8628AUJZ-R2 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 overload recovery?

Internal settling occurs within two clock cycles after output saturation, resulting in a short recovery time of less than 10 µs.