ADA4084-1ARJZ-R2

Overview

The ADA4084-1ARJZ-R2 is a single-channel, low-power operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities and operates within a supply voltage range of +3 V to +30 V (or ±1.5 V to ±15 V). Key electrical specifications include a gain bandwidth product of 15.9 MHz, a typical slew rate of 4.6 V/µs, and an input offset voltage maximum of 130 µV in the SOT-23 package. The device draws a typical supply current of 595 µA per amplifier at ±15 V and exhibits a voltage noise density of 3.9 nV/√Hz at 1 kHz. It is housed in a 5-lead SOT-23 surface-mount package and is specified for operation over an industrial temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail input and output functionality enables full signal swing capability 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 external compensation.

Applications

• Battery-powered instrumentation
• High-side and low-side sensing circuits
• Power supply control and protection systems
• Digital-to-analog converter (DAC) output amplifiers
• Analog-to-digital converter (ADC) input buffers

Procurement Notes

Verify the specific ordering suffix ARJZ-R2 against the manufacturer's official documentation to confirm the exact package type, reel quantity, and tape-and-reel specifications. Ensure that the component meets all required environmental standards and RoHS compliance criteria relevant to the target application before finalizing procurement orders.

Selection Notes

Select this component for applications requiring both AC and precision DC performance in single-supply environments. The combination of wide bandwidth, low noise, and rail-to-rail I/O makes it suitable for filters and instrumentation. Consider the SOT-23 package constraints regarding thermal resistance and pin count when designing the PCB layout.

Part Context

The ADA4084-1ARJZ-R2 belongs to the ADA4084 series, which includes single, dual, and quad variants. This series consists of high-voltage, low-noise operational amplifiers designed for demanding analog signal processing tasks. The single-channel configuration provides a compact solution for space-constrained designs while maintaining the performance characteristics shared across the family.

Replacement Considerations

Consult the manufacturer's ordering guide for verified substitute part numbers within the same series or equivalent products from other manufacturers. Ensure that any replacement matches the electrical specifications, package dimensions, and pinout configuration to maintain circuit compatibility.