ADA4001-2ARZ-R7

Overview

The ADA4001-2ARZ-R7 is a dual-channel JFET operational amplifier featuring rail-to-rail output, low input voltage noise of 7.7 nV/√Hz at 1 kHz, and low input bias current of 20 pA typical at ±15 V supply. It operates within a supply voltage range of ±5 V to ±18 V with a slew rate of ±25 V/µs and a gain bandwidth product of 16.7 MHz. The device maintains unity-gain stability, exhibits no phase reversal, and includes a total harmonic distortion plus noise of 0.00006%. It is housed in an 8-lead SOIC package and functions across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Features a JFET input stage providing exceptionally low input bias current and low input voltage noise for high-impedance sensor applications.
• Delivers rail-to-rail output swing while maintaining unity-gain stability and preventing output phase reversal under common-mode voltage excursions.
• Combines fast settling times with robust performance under substantial capacitive loads, ensuring accuracy in precision measurement environments.

Applications

• Photodiode amplifiers
• Precision current measurement
• Multipole filters

Procurement Notes

Verify the specific ordering suffix R-7 corresponds to the reel packaging configuration required for automated assembly processes. Confirm that the RoHS compliant designation (Z) meets environmental regulations for the target deployment region. Ensure the 8-lead narrow SOIC footprint aligns with the designated PCB layout dimensions and thermal management requirements before finalizing procurement orders.

Selection Notes

Select this component when circuit design demands both low noise characteristics and minimal input bias current simultaneously. The rail-to-rail output capability allows for maximum dynamic range utilization in single-supply or split-supply configurations. Consider the extended temperature rating for operation in harsh industrial or automotive environments where standard commercial grade devices may fail.

Part Context

This part belongs to the ADA4001-2 family of dual operational amplifiers manufactured by Analog Devices Inc. The series is characterized by JFET input technology optimized for precision signal conditioning tasks. The R-7 suffix indicates a specific tape and reel packaging format designed for surface-mount technology assembly lines, distinguishing it from tube or cut-tape variants.

Replacement Considerations

ADA4001-2ARZ

FAQ

Does the ADA4001-2 suffer from output phase reversal?

No, unlike many older JFET amplifiers, the ADA4001-2 does not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range.

What is the typical input bias current specification?

The typical input bias current is 20 pA at a supply voltage of ±15 V.