AD8684ARUZ-REEL

Overview

The AD8684ARUZ-REEL is a quad, low power, high speed JFET input operational amplifier manufactured by Analog Devices Inc. It features a typical gain bandwidth of 3.5 MHz and a slew rate of 9 V/µs. The device supports supply voltages from ±4.5 V to ±18 V (or single supply 9 V to 36 V) with a maximum supply current of 250 µA per amplifier. Key electrical characteristics include a maximum offset voltage of 1 mV at 25°C, a maximum input bias current of 20 pA at 25°C, and a typical common-mode rejection ratio of 90 dB. It operates within a temperature range of -40°C to +85°C and is housed in a 14-Lead TSSOP package.

Feature Summary

• JFET input stage ensures extremely low input bias current for high source impedance applications
• Unity-gain stable design capable of driving higher capacitive loads
• Optimized combination of high speed and low power consumption
• Common-mode input voltage range includes the positive supply rail

Applications

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

Procurement Notes

Verify the specific ordering suffix '-REEL' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the 'ARUZ' designation matches the 14-Lead TSSOP package option needed for the target PCB layout. Ensure the component meets RoHS compliance standards as indicated by the 'Z' suffix in the base part number family.

Selection Notes

Select this component when a balance of high slew rate and low quiescent current is required for battery-powered designs. The JFET input architecture is suitable for circuits involving high source impedances where minimal loading effects are critical. Verify that the 3.5 MHz bandwidth aligns with the signal frequency requirements of the application.

Part Context

This part belongs to the AD8682/AD8684 family of dual and quad low power, precision JFET operational amplifiers. The AD8684 variant specifically provides four independent amplifier channels within a single integrated circuit. It shares core performance specifications with its dual-channel counterpart, the AD8682, while offering increased channel density for complex multi-stage signal conditioning tasks.

Replacement Considerations

The AD8682 serves as the dual-channel equivalent within the same product family.