ADA4084-2ARMZ-R7

Overview

The ADA4084-2ARMZ-R7 is a dual-channel, single-supply operational amplifier manufactured by Analog Devices. It features rail-to-rail input and output capabilities, supporting supply voltages from +3 V to +30 V (±1.5 V to ±15 V). The device offers a gain bandwidth product of 15.9 MHz and a typical slew rate of 4.6 V/µs at ±15 V. Key electrical characteristics include a maximum offset voltage of 130 µV in MSOP packages and a typical voltage noise density of 3.9 nV/√Hz at 1 kHz. It operates within an industrial temperature range of −40°C to +125°C and is housed in an 8-lead MSOP surface-mount package.

Feature Summary

• Rail-to-rail input and output functionality enables full signal swing 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 voltage noise density.
• Unity-gain stable design suitable for direct feedback configurations without compensation components.

Applications

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

Procurement Notes

Verify the specific ordering suffix ARMZ-R7 corresponds to the 8-lead MSOP package and reel packaging configuration. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer's documentation. Ensure the procurement channel provides valid traceability for the Analog Devices Inc. manufacturing origin. Cross-reference the datasheet revision to confirm the electrical specifications match the required design parameters.

Selection Notes

Select this component for applications requiring both AC and precision DC performance in single-supply environments. The combination of wide bandwidth and low noise makes it suitable for filters and instrumentation. Consider the 8-lead MSOP package for space-constrained PCB layouts. Evaluate the thermal resistance characteristics if operating near the upper limits of the specified temperature range.

Part Context

This part belongs to the ADA4084 series, which includes single (ADA4084-1), dual (ADA4084-2), and quad (ADA4084-4) variants. These amplifiers are designed as high-voltage, low-noise CMOS devices offering rail-to-rail input/output. The series is intended for portable telecommunications and general-purpose precision amplification tasks where low power and high accuracy are critical.

Replacement Considerations

Direct functional substitutes within the same family include the ADA4084-1ARJZ-R7 (single channel, SOT-23-5) and ADA4084-4ARMZ-R7 (quad channel, TSSOP-14). Verify pin compatibility and package dimensions when substituting between different channel counts or form factors.