AD8619ARZ

Overview

The UMW AD8619ARZ is a quad, low-cost, micropower CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates from a single supply of 1.8 V to 5.5 V or dual supplies of ±0.9 V to ±2.5 V. Key electrical specifications include a maximum offset voltage of 2.2 mV, a gain-bandwidth product of 400 kHz, and a typical supply current of 38 μA per amplifier. The device exhibits low noise with a density of 22 nV/√Hz at 10 kHz and maintains unity gain stability without phase reversal.

Feature Summary

• Rail-to-rail input and output operation enables full signal swing in low-voltage single-supply systems.
• Micropower consumption with a maximum supply current of 50 μA per amplifier across the operating temperature range.
• Low noise performance with a voltage noise density of 22 nV/√Hz at 10 kHz.
• Automotive qualification ensures reliability for demanding industrial applications.

Applications

• Battery-powered instrumentation
• Multipole filters
• Current shunt sense circuits
• ADC predriver stages
• DAC drivers and level shifters

Procurement Notes

Verify that the component matches the specific UTD Semiconductor manufacturing source rather than Analog Devices. Confirm the package type corresponds to SOP-14 as indicated in the ordering information. Ensure the part meets automotive qualification requirements if intended for such environments. Check datasheet revisions for any updates to electrical characteristics or pin configurations before final integration.

Selection Notes

Select this component for designs requiring low power consumption alongside precision amplification in portable devices. The rail-to-rail I/O capability makes it suitable for buffering ADCs and DACs in single-supply systems. Consider the 400 kHz bandwidth and 2.2 mV offset voltage when designing high-precision sensor interfaces. The automotive qualification supports use in harsh environmental conditions.

Part Context

This quad amplifier belongs to the AD861x family, which includes single (AD8613), dual (AD8617), and quad (AD8619) variants. All members share identical electrical characteristics but differ in channel count and package options. The AD8619ARZ specifically provides four independent amplifiers in a 14-pin SOP package, offering a compact solution for multi-channel signal processing tasks.

Replacement Considerations

Direct substitutes within the same family include the AD8613AKSZ (single channel) and AD8617ARZ (dual channel). Cross-manufacturer equivalents may require verification of pin compatibility and electrical parameter alignment. Ensure replacement parts maintain the required automotive qualification status if applicable to the original design intent.

FAQ

Does the AD8619ARZ experience phase reversal during input overload?

No, the device is designed to be free of phase reversal issues even when subjected to large common-mode voltage excursions beyond the supply rails.

What is the maximum input bias current specification?

The maximum input bias current is specified as 1 pA at 25°C, increasing to 780 pA over the extended temperature range of -40°C to +125°C.