ADA4004-2ARZ

Overview

The ADA4004-2ARZ is a dual precision amplifier from Analog Devices, manufactured using the iPolar process. It features a voltage noise density of 1.8 nV/√Hz and a gain bandwidth product of 12 MHz. The device operates within a supply range of ±5 V to ±15 V (up to 36 V total). Key electrical specifications include an input offset voltage of 40 μV typical and 125 μV maximum at ±15 V, with a drift of 0.7 μV/°C. Input bias current is typically 90 nA. The package is an 8-Lead SOIC_N.

Feature Summary

• Very low voltage noise density of 1.8 nV/√Hz
• High open-loop gain of 120 dB
• Low input bias current of 90 nA maximum
• Wide bandwidth of 12 MHz

Applications

• Precision instrumentation
• Filter blocks
• Microphone preamplifiers
• Industrial control
• Thermocouples and RTDs

Procurement Notes

Verify that the ordering suffix ARZ corresponds to the 8-Lead SOIC_N package option as specified in the official Analog Devices Ordering Guide. Confirm RoHS compliance status associated with the Z suffix. Ensure the component matches the Rev. H datasheet specifications for temperature range and electrical parameters before integration into the design.

Selection Notes

Select this component when a dual-channel configuration is required alongside ultra-low noise performance. The 12 MHz bandwidth supports high-frequency signal processing applications. Consider the 8-Lead SOIC_N package for standard surface-mount assembly requirements. Evaluate the 1.7 mA per amplifier supply current against system power constraints.

Part Context

The ADA4004-2ARZ belongs to the ADA4004 series of precision amplifiers, which also includes single-channel (ADA4004-1) and quad-channel (ADA4004-4) variants. All members share the same core technology based on the high-performance iPolar process, offering consistent noise and speed characteristics across the family while varying in channel count and package options.

Replacement Considerations

Direct functional substitutes within the same series include ADA4004-1ARZ (single channel) and ADA4004-4ARZ (quad channel), provided pinout compatibility or circuit redesign is acceptable. Other Analog Devices JFET op-amps may serve as alternatives if specific noise or bandwidth parameters differ from the 1.8 nV/√Hz and 12 MHz targets.