AD8682ARZ-REEL

Overview

The AD8682ARZ-REEL7 is a dual-channel precision JFET operational amplifier manufactured by Analog Devices. It features a typical gain bandwidth product of 3.5 MHz and a slew rate of 9 V/μs, with a maximum supply current of 250 μA per amplifier. The device operates within a supply voltage range of ±4.5 V to ±18 V and supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a maximum offset voltage of 1 mV at 25°C, a typical common-mode rejection ratio of 90 dB, and a low input bias current of 20 pA maximum at 25°C.

Feature Summary

• JFET input stage providing exceptionally low input bias current for high source impedance applications
• Unity-gain stable design capable of driving higher capacitive loads without oscillation
• Optimized combination of high speed and low power consumption suitable for battery-powered systems

Applications

• Portable telecommunications equipment
• Low power industrial and instrumentation systems
• Active and precision filters
• Strain gauge amplifiers
• Supply current monitoring circuits

Procurement Notes

Verify the specific ordering suffix matches the required packaging format, as REEL7 indicates tape and reel quantities distinct from bulk or cut tape options. Confirm RoHS compliance status via the manufacturer's documentation. Ensure the component grade aligns with the specified industrial temperature range requirements for the target environment.

Selection Notes

Select this component when application demands require both high slew rates and minimal quiescent current consumption. The JFET input architecture makes it suitable for interfacing with high-impedance signal sources where bias current errors must be minimized. Verify that the required common-mode voltage range stays within the guaranteed limits to prevent phase inversion issues during operation.

Part Context

This part belongs to the AD8682/AD8684 family of low power, high-speed JFET operational amplifiers. The AD8682 variant provides two independent channels in an 8-lead package, while the AD8684 offers four channels. Both share identical electrical performance specifications regarding bandwidth, noise, and power consumption profiles.

Replacement Considerations

Direct pin-compatible replacements within the same family include the AD8684 for quad-channel requirements. Cross-family alternatives should be evaluated based on matching JFET input bias currents and unity-gain stability characteristics.