AD8684ARUZ

Overview

The AD8684ARUZ is a quad low power, high speed JFET operational amplifier manufactured by Analog Devices Inc. It features a typical gain bandwidth product of 3.5 MHz and a slew rate of 9 V/µs. The device operates within a supply voltage range of ±4.5 V to ±18 V with a maximum supply current of 250 µA per amplifier. Input characteristics include a maximum offset voltage of 1 mV at 25°C and a maximum input bias current of 20 pA at 25°C. The component is housed in a 14-Lead TSSOP package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• JFET input stage ensures extremely low input bias current for high source impedance applications
• Optimized combination of high speed performance and low power consumption
• Unity-gain stable design capable of driving higher capacity loads
• 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 RUZ corresponds to the 14-Lead TSSOP package option when sourcing components. Confirm RoHS compliance status as indicated by the Z suffix in related part numbers. Ensure the selected variant matches the required operating temperature range of -40°C to +85°C for the intended application environment.

Selection Notes

Select this component for designs requiring high-speed signal processing with minimal power draw. The JFET inputs are suitable for high-impedance sources where bias current must be minimized. Consider the common-mode range limitations relative to the negative supply rail when designing single-supply circuits or high-side sensing configurations.

Part Context

This quad amplifier belongs to the AD8682/AD8684 family of low power, high speed JFET operational amplifiers. The series is designed to provide excellent dynamic response while maintaining low quiescent currents, making it distinct from standard bipolar or CMOS op-amps in its specific balance of speed and power efficiency.

Replacement Considerations

Public confirmed substitute part numbers: None identified.