ADA4001-2ARZ-RL

Overview

The ADA4001-2ARZ-RL is a dual-channel JFET input operational amplifier featuring rail-to-rail output and unity-gain stability. It operates within a supply voltage range of ±5 V to ±18 V, consuming 3 mA typical supply current per amplifier at 25°C. The device exhibits low offset voltage (±0.5 mV typical) and low temperature coefficient of offset voltage (±5 µV/°C). Key dynamic parameters include a slew rate of ±25 V/µs, gain bandwidth product of 16.7 MHz, and -3 dB closed-loop bandwidth of 10.3 MHz. Noise performance includes 7.7 nV/√Hz voltage noise density at 1 kHz and 20 fA/√Hz current noise density.

Feature Summary

• JFET input stage providing extremely low input bias current and low input current noise for high impedance sensor applications
• Rail-to-rail output capability with no phase reversal when input voltages exceed the common-mode voltage range
• Unity-gain stable design ensuring fast settling times even under substantial capacitive loads

Applications

• Instrumentation systems requiring precision signal conditioning
• Medical instruments demanding low noise and high accuracy
• Photodiode amplifiers utilizing high impedance inputs
• Multipole filter circuits benefiting from fast settling performance

Procurement Notes

Verify the specific ordering suffix corresponds to the reel packaging configuration required for automated assembly processes. Confirm RoHS compliance status indicated by the Z suffix in the part number. Ensure the selected component matches the extended industrial temperature range specifications defined in the datasheet electrical characteristics table.

Selection Notes

Select this component for applications requiring low input bias current combined with rail-to-rail output swing. The JFET input architecture minimizes loading effects on high source impedances. Verify that the operating supply voltage remains within the specified ±5 V to ±18 V limits to maintain guaranteed performance parameters across the full temperature range.

Part Context

This component belongs to the ADA4001 family of low noise, low input bias current, rail-to-rail output, JFET dual operational amplifiers manufactured by Analog Devices Inc. The series is designed for precision analog signal processing tasks where low distortion and high speed are critical requirements.

Replacement Considerations

ADA4001-2ARZ-R7

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 and 25°C ambient temperature.