ADA4084-2ARMZ-RL

Overview

The ADA4084-2ARMZ-RL is a dual-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 and a typical supply current of 0.625 mA per amplifier at ±15 V. The device features a maximum offset voltage of 100 µV (SOIC) 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 capability for maximizing 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

Applications

• Battery-powered instrumentation
• High-side and low-side sensing
• Power supply control and protection
• Telecommunications equipment
• DAC output amplifiers and ADC input buffers

Procurement Notes

Verify the specific package variant, as the ARMZ suffix indicates an LFCSP package. Confirm that the RL suffix corresponds to reel packaging requirements for your assembly line. Ensure compatibility with the required operating temperature range and supply voltage specifications before integration.

Selection Notes

Select this component for applications requiring both AC signal fidelity and DC precision in single-supply environments. The rail-to-rail I/O allows for multistage filter designs without signal clipping. Consider the low noise and high CMRR for sensitive transducer interfaces such as Hall effect or piezoelectric sensors.

Part Context

This part belongs to the ADA4084 series, which includes single (ADA4084-1), dual (ADA4084-2), and quad (ADA4084-4) variants. All share identical electrical characteristics but differ in channel count and package options. The series is designed for high-voltage, low-noise applications within the Analog Devices portfolio.

Replacement Considerations

Direct functional substitutes within the same family include the ADA4084-1 and ADA4084-4, provided pinout compatibility is verified for the specific package type.