AD8665ARJZ-REEL7

Overview

The AD8665ARJZ-REEL7 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, low input bias current of 1 pA, and a gain-bandwidth product of 4 MHz. The device delivers a slew rate of 3.5 V/µs and maintains low noise performance with 8 nV/√Hz at 10 kHz. It is housed in an 8-Lead SOIC_N package and functions within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail output stage ensures full signal swing across the operating supply range.
• Low input bias current minimizes loading effects on high-impedance sensor sources.
• Unity-gain stability allows for direct configuration as voltage followers without oscillation risks.
• Extended supply voltage range supports compatibility with various ADC and DAC interfaces.

Applications

• Sensor amplification
• Photodiode amplification
• ADC driver circuits
• Medical equipment signal conditioning

Procurement Notes

Verify that the specific part number suffix matches the required package type and reel quantity. Confirm RoHS compliance status if environmental regulations apply to the assembly process. Ensure the ordering documentation aligns with the manufacturer's latest revision history to avoid discrepancies in pinout or thermal characteristics during procurement.

Selection Notes

Select this component when a single-channel amplifier with rail-to-rail output is required for cost-sensitive applications typically reserved for JFET amplifiers. Consider the AD8665 over higher-offset families like the AD8661 if lower precision requirements are acceptable. Verify that the 4 MHz bandwidth and 3.5 V/µs slew rate meet the dynamic signal requirements of the target application.

Part Context

This component belongs to the AD866x series, which includes dual-channel (AD8666) and quad-channel (AD8668) variants. These devices share similar electrical characteristics but differ in channel count and package options. The AD8665 specifically provides a single amplifier solution, making it suitable for designs where space or power consumption must be minimized compared to multi-channel alternatives.

Replacement Considerations

Direct functional substitutes within the same family include the AD8666 (dual channel) and AD8668 (quad channel), provided additional channels are acceptable. Automotive-qualified versions such as the AD8666W or AD8668W may be considered if automotive reliability standards are required, though specifications may vary slightly from commercial models.

FAQ

Does the AD8665 exhibit phase reversal upon input overload?

No, the AD8665 does not exhibit output phase reversal when the input common-mode voltage exceeds the supply rails.

What is the maximum short-circuit output current?

The device can withstand indefinite short-circuit conditions to ground with a typical short-circuit output current of ±19 mA at 5 V supply and ±140 mA at 16 V supply.