ADA4004-2ARMZ

Overview

The ADA4004-2ARMZ is a dual precision amplifier from Analog Devices, manufactured on 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 supply voltages ranging from ±5 V to ±15 V (up to 36 V total). Key electrical specifications include an input offset voltage of 40 μV typ (125 μV max at ±15 V), an input bias current of 90 nA max, and a supply current of 2.2 mA per amplifier. It provides high open-loop gain of 120 dB and maintains operation across a temperature range of −40°C to +125°C.

Feature Summary

• Very low voltage noise density of 1.8 nV/√Hz with a low 6 Hz 1/f noise corner frequency.
• High open-loop gain of 120 dB combined with wide 12 MHz bandwidth for signal fidelity.
• Low power consumption utilizing the iPolar process technology.
• Robust performance characterized by low input bias current and minimal offset voltage drift.

Applications

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

Procurement Notes

Verify that the ordering suffix 'ARMZ' corresponds to the 8-Lead MSOP package option as specified in the official Analog Devices Ordering Guide. Confirm RoHS compliance status associated with the 'Z' suffix. Ensure the selected variant matches the required tape-and-reel or tube packaging configuration for your manufacturing line.

Selection Notes

Select this component when a dual-channel solution is required alongside single-channel (ADA4004-1) or quad-channel (ADA4004-4) variants within the same family. Consider the 8-Lead MSOP package for space-constrained designs compared to standard SOIC options. Evaluate the trade-off between the 1.8 nV/√Hz noise floor and the 12 MHz bandwidth against higher-speed or lower-noise alternatives.

Part Context

The ADA4004-2ARMZ belongs to the ADA4004 series of low noise operational amplifiers designed for high-performance analog signal processing. This series utilizes specialized iPolar process technology to achieve superior noise and speed characteristics while maintaining low power consumption. The dual configuration allows for cost-effective implementation of differential circuits or dual-channel filtering applications.

Replacement Considerations

Direct pin-compatible replacements within the same package include the ADA4004-2ARZ (8-Lead SOIC_N). Other family members like the ADA4004-1 and ADA4004-4 offer different channel counts but share identical electrical characteristics and process technology.

FAQ

What is the maximum supply voltage for the ADA4004-2ARMZ?

The absolute maximum supply voltage rating is ±18 V or +36 V total.

Does the ADA4004-2ARMZ exhibit phase reversal upon overdrive?

No, the datasheet indicates no phase reversal occurs even under large-signal transient conditions.