ADA4000-2ARMZ-RL

Overview

The ADA4000-2ARMZ-RL is a dual-channel, low-cost, precision JFET input operational amplifier manufactured by Analog Devices Inc. It features a high slew rate of 20 V/µs and fast settling time, with an offset voltage maximum of 1.70 mV and bias current maximum of 40 pA. The device operates on supply voltages ranging from ±4 V to ±18 V and exhibits low voltage noise density of 16 nV/√Hz. It is unity gain stable with a wide bandwidth of 5 MHz and includes the positive power supply in its common-mode voltage range.

Feature Summary

• JFET input structure providing high input impedance and very low input bias current
• High slew rate and fast settling time suitable for rapid signal transitions
• Input common-mode voltage range extends to include the positive supply rail
• Unity gain stability across operating conditions

Applications

• Driving analog-to-digital converter inputs
• Buffering digital-to-analog converter outputs
• High-side signal conditioning
• Instrumentation-quality photodiode amplification
• Fast precision filters including phase-locked loop filters

Procurement Notes

Verify that the ordering suffix RL indicates reel packaging when sourcing components. Confirm the RM-8 package option matches the required footprint for surface-mount assembly. Ensure the temperature range specification aligns with the intended environmental operating conditions. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and revision status before integration into production designs.

Selection Notes

Select this component for applications requiring high input impedance combined with precision DC characteristics. The inclusion of the positive supply voltage in the common-mode range makes it suitable for single-supply or high-side sensing configurations. Consider the thermal resistance values associated with the MSOP package when designing heat dissipation strategies for dense PCB layouts.

Part Context

This device belongs to the ADA4000 series of precision JFET input operational amplifiers, which also includes single-channel (ADA4000-1) and quad-channel (ADA4000-4) variants. The series is designed to offer a balance of low cost, low power consumption, and high performance metrics such as wide bandwidth and fast transient response for general-purpose signal processing tasks.

Replacement Considerations

Direct functional substitutes within the same family include the ADA4000-2ARZ and ADA4000-2ARZ-R7, which share identical electrical specifications but differ in package type or reel configuration.