AD8665ARJZ-REEL

Overview

The AD8665ARJZ-REEL is a single-channel, unity-gain stable operational amplifier from the Analog Devices AD866x family. It features rail-to-rail output capability and operates on supply voltages ranging from 5 V to 16 V (single) or ±2.5 V to ±8 V (dual). Key electrical specifications include a maximum offset voltage of 2.5 mV, a gain-bandwidth product of 4 MHz, and a slew rate of 3.5 V/µs. The device exhibits low input bias current (1 pA max) and low noise density (8 nV/√Hz at 10 kHz). It is housed in a 5-lead SOT-23 package and supports an extended industrial operating temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail output stage provides full dynamic signal swing across the supply range.
• Low input bias current minimizes loading effects on high-impedance sensor sources.
• Unity-gain stability ensures reliable performance in buffer configurations without oscillation risks.
• Extended supply voltage range accommodates diverse system power architectures.

Applications

• Sensor amplification for high-impedance transducers
• Photodiode amplification circuits
• ADC driver stages requiring wide bandwidth
• Medical equipment signal conditioning

Procurement Notes

Verify that the specific ordering suffix matches the required package type and reel quantity configuration. Confirm RoHS compliance status as indicated by the 'Z' suffix in the part number. Ensure the procurement channel provides valid traceability documentation for the component batch. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and thermal characteristics remain unchanged.

Selection Notes

Select this component when a single-channel amplifier with rail-to-rail output is required within a compact SOT-23 footprint. It is suitable for applications demanding low noise and high input impedance without the cost of JFET amplifiers. Consider the AD8666 or AD8668 if dual or quad channel configurations are needed instead. Evaluate the 4 MHz bandwidth against system speed requirements to ensure adequate phase margin.

Part Context

This component belongs to the AD866x series of precision CMOS amplifiers designed for cost-sensitive applications. The series includes single (AD8665), dual (AD8666), and quad (AD8668) variants sharing similar electrical characteristics. The AD8665 specifically addresses needs for low-power, high-precision signal processing in portable and battery-operated devices.

Replacement Considerations

The AD8665ARJZ-R2 serves as a non-reel alternative for the same 5-lead SOT-23 package and electrical specifications. Designers should verify that any substitute maintains the 16 V maximum supply rating and 4 MHz gain-bandwidth product to ensure circuit compatibility.