ADA4084-1ARJZ-R7

Overview

The ADA4084-1ARJZ-R7 is a single-supply, low noise operational amplifier featuring rail-to-rail input and output capabilities. It operates from +3 V to +30 V (or ±1.5 V to ±15 V) with a typical supply current of 0.625 mA per amplifier at ±15 V. The device offers a gain bandwidth product of 15.9 MHz and a unity-gain crossover frequency of 9.9 MHz. Key electrical characteristics include a maximum offset voltage of 130 µV, a typical slew rate of 4.6 V/µs, and a voltage noise density of 3.9 nV/√Hz at 1 kHz. It is specified over an industrial temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail input and output operation for extended dynamic range in single-supply systems
• Low power consumption with 0.625 mA typical supply current per amplifier
• 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 type and tape-and-reel configuration against the official Analog Devices ordering guide. Confirm that the component meets all environmental and safety standards required for the intended deployment environment before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring both AC signal fidelity and precise DC performance in single-supply environments. The rail-to-rail I/O capability allows for multistage filter designs while maintaining high signal-to-noise ratios. Ensure the supply voltage remains within the guaranteed operating range of +3 V to +30 V.

Part Context

This part belongs to the ADA4084 series of high-voltage, low-noise operational amplifiers manufactured by Analog Devices. The series includes single, dual, and quad variants designed for portable telecommunications, transducer amplification, and general-purpose filtering where wide bandwidth and precision are critical requirements.

Replacement Considerations

Direct substitutes within the same family include the ADA4084-2 and ADA4084-4 for dual and quad channel needs respectively. Other Analog Devices low-noise op amps such as the AD8675 or AD8597 may serve as alternatives depending on specific noise and bandwidth constraints.