ADA4665-2ARZ-RL

Overview

The ADA4665-2ARZ-RL is a dual-channel CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 5 V to 16 V or dual supplies of ±2.5 V to ±8 V. The device offers a typical gain bandwidth product of 1.2 MHz, a slew rate of 1 V/µs, and a maximum input bias current of 1 pA. Supply current is typically 290 µA per amplifier at 25°C, rising to a maximum of 600 µA across the extended industrial temperature range of -40°C to +125°C. It is housed in an 8-lead SOIC package.

Feature Summary

• Rail-to-rail input and output swing capability for maximizing dynamic range
• Low power consumption optimized for high-voltage applications
• Very low input bias current ensuring minimal loading effects
• Unity-gain stable design suitable for direct feedback configurations

Applications

• Portable systems with strict power budget constraints
• Medical equipment requiring precision signal conditioning
• Physiological measurement front ends
• Current shunt sensors for power metering
• Active multipole filters

Procurement Notes

Verify that the ordering suffix matches the required reel packaging specification. Confirm RoHS compliance status as indicated by the 'Z' suffix in the part number. Ensure the component meets the specified operating temperature range for your application environment. Cross-reference the datasheet revision to confirm electrical characteristics align with your design requirements before finalizing procurement.

Selection Notes

Select this component when rail-to-rail performance is necessary alongside low power consumption. It is appropriate for designs requiring operation up to 16 V single supply. Consider the 1.2 MHz bandwidth limit for high-speed signal processing tasks. Evaluate thermal resistance values if operating near maximum temperature limits. Compare against other family members like the AD8542 if quad channel configuration is preferred.

Part Context

This device belongs to the ADA4665 series of low-cost, rail-to-rail input/output operational amplifiers manufactured by Analog Devices. It serves as the dual-channel variant within this family, offering similar electrical characteristics to single-channel parts like the AD8541 but with two independent amplifiers in one package. The series targets general-purpose applications where power efficiency and wide supply voltage operation are critical.

Replacement Considerations

Public confirmed substitute part numbers include ADA4665-2ARMZ and ADA4665-2ARZ-R7.

FAQ

What is the maximum supply voltage for the ADA4665-2?

The absolute maximum supply voltage rating is 16.5 V, with normal operation supported up to 16 V.

Is the ADA4665-2 unity-gain stable?

Yes, the device is specified as unity-gain stable.

How does the input bias current vary with temperature?

The input bias current increases with temperature, reaching a maximum of 200 pA at +125°C under 16 V operation.