ADA4000-1AUJZ-R2

Overview

The ADA4000-1AUJZ-R2 is a single-channel, precision JFET input operational amplifier manufactured by Analog Devices Inc. It features a maximum offset voltage of 1.70 mV and a maximum bias current of 40 pA. The device operates within a supply voltage range of ±4 V to ±18 V and delivers a slew rate of 20 V/μs with a gain bandwidth product of 5 MHz. It exhibits low voltage noise density of 16 nV/√Hz and settles to within 0.1% in less than 1.2 μs. The component is housed in a 5-lead TSOT (UJ-5) surface-mount package.

Feature Summary

• Features high input impedance and very low input bias current suitable for high-side signal conditioning
• Includes unity gain stability and wide common-mode voltage range that encompasses the positive power supply rail
• Provides fast settling time and high slew rate for driving analog-to-digital converter inputs

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 specific ordering suffix R2 corresponds to the 5-lead TSOT package configuration as listed in the official Analog Devices ordering guide. Confirm RoHS compliance status indicated by the Z suffix. Ensure the operating temperature range matches the -40°C to +125°C specification provided in the datasheet before finalizing procurement specifications.

Selection Notes

Select this component when circuit design requires a single-channel amplifier with extremely low input bias current and high input impedance. It is appropriate for applications demanding fast settling times and wide common-mode voltage ranges that include the positive supply rail. Consider the 5-lead TSOT package constraints regarding thermal resistance and physical footprint during layout planning.

Part Context

This part belongs to the ADA4000 series of low-cost, precision JFET input operational amplifiers. The series includes single, dual, and quad channel variants designed for data acquisition systems and portable instruments. The ADA4000-1 specifically provides one amplifier channel in a compact surface-mount package optimized for space-constrained designs requiring precision signal processing capabilities.

Replacement Considerations

Direct substitutes within the same family include the ADA4000-1ARZ and ADA4000-1AUJZ-R7 which share identical electrical characteristics but differ in packaging or reel quantities.