ADA4000-1ARZ-R7

Overview

The ADA4000-1ARZ-R7 is a single-channel, low-cost, precision JFET input operational amplifier manufactured by Analog Devices Inc. It features a high slew rate of 20 V/μs and a wide bandwidth with a gain-bandwidth product of 5 MHz. The device operates on supply voltages ranging from ±4 V to ±18 V. Key electrical characteristics include a maximum offset voltage of 1.70 mV, a maximum input bias current of 40 pA, and a voltage noise density of 16 nV/√Hz at 1 kHz. It is unity-gain stable and includes the positive power supply in its common-mode voltage range.

Feature Summary

• JFET input structure providing high input impedance and very low bias current
• Wide bandwidth combined with fast settling time for rapid signal processing
• Input common-mode voltage range extends to the positive supply rail

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 the package option matches the required PCB footprint, specifically the 8-Lead SOIC_N (R-8). Confirm that the RoHS compliant suffix 'Z' meets environmental standards. Ensure the reel packaging designation 'R7' aligns with automated assembly equipment specifications before finalizing procurement orders.

Selection Notes

Select this component when high input impedance and low bias current are critical for signal integrity. It is suitable for applications requiring wide bandwidth and fast transient response within a single-channel configuration. Consider the ±4 V to ±18 V operating range to ensure compatibility with available system power supplies.

Part Context

This part belongs to the ADA4000 series of precision JFET input operational amplifiers, which also includes dual-channel (ADA4000-2) and quad-channel (ADA4000-4) variants. The series is designed for cost-effective precision signal conditioning in industrial and instrumentation systems. The ARZ suffix indicates an 8-Lead SOIC package, while the R7 suffix denotes tape and reel packaging.

Replacement Considerations

Direct functional substitutes within the same family include the ADA4000-1AUJZ-R7 for TSOT-5 packaging or the ADA4000-1ARMZ-RL for MSOP-8 packaging. Cross-family replacements require verification of pinout compatibility and electrical parameter alignment.