ADA4084-4ARUZ-RL

Overview

The ADA4084-4ARUZ-RL is a quad-channel, low noise, rail-to-rail input/output operational amplifier from Analog Devices. It operates on single supplies from +3 V to +30 V or dual supplies of ±1.5 V to ±15 V. Key electrical parameters include a gain bandwidth product of 15.9 MHz at AV = 100, a typical unity-gain crossover frequency of 9.9 MHz, and a -3 dB closed-loop bandwidth of 13.9 MHz at ±15 V. The device features a maximum offset voltage of 100 µV (SOIC) and a typical supply current of 0.625 mA per amplifier at ±15 V. It is specified over an industrial temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability for maximizing dynamic range in single-supply systems.
• Low power consumption with a typical supply current of 0.625 mA per amplifier at ±15 V.
• High precision performance characterized by low offset voltage and low noise density.
• Unity-gain stable design suitable for direct feedback configurations.

Applications

• Battery-powered instrumentation
• High-side and low-side sensing
• Power supply control and protection
• Telecommunications equipment
• Analog-to-digital converter (ADC) input buffers

Procurement Notes

Verify the specific package variant, as the ARUZ suffix denotes the 14-lead TSSOP package. Confirm that the RL suffix indicates reel packaging for automated assembly. Ensure compatibility with the required operating voltage range and thermal management specifications for the target PCB layout. Cross-reference the datasheet revision to confirm pinout consistency if replacing older versions.

Selection Notes

Select this component when high precision and wide bandwidth are required in a low-power, single-supply environment. The quad configuration reduces board space compared to using multiple single amplifiers. Consider the rail-to-rail input/output feature for applications requiring maximum signal swing near the supply rails. Evaluate the thermal resistance characteristics for the TSSOP package under expected load conditions.

Part Context

This part belongs to the ADA4084 series, which includes single (ADA4084-1), dual (ADA4084-2), and quad (ADA4084-4) variants. All members share identical electrical characteristics but differ in channel count and package options. The series is designed for applications demanding both AC and precision DC performance in single-supply systems.

Replacement Considerations

Direct substitutes within the same family include ADA4084-1ARUZ-RL and ADA4084-2ARUZ-RL, provided the channel count meets the design requirements. Verify pinout compatibility across different packages such as SOIC or LFCSP if form factor changes are permissible.