AD8609ARZ-REEL

Overview

The AD8609ARZ-REEL is a quad precision micro-power operational amplifier from Analog Devices, featuring rail-to-rail input and output capabilities. It operates on a single supply of 1.8 V to 5 V or dual supplies of ±0.9 V to ±2.5 V. Key electrical specifications include a maximum offset voltage of 50 µV, low input bias current of 1 pA, and a gain bandwidth product of 400 kHz. The device consumes a maximum of 50 µA per amplifier and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Patented trimming technique achieves superior precision without laser adjustment
• Rail-to-rail input and output swing enables buffering of wide output swing devices
• No phase reversal occurs even when input voltage exceeds the common-mode range
• Unity gain stable with low distortion characteristics

Applications

• Battery-powered instrumentation
• Multipole filters
• Capacitive and inductive sensors
• Low power ASIC input or output amplifiers

Procurement Notes

Verify the specific reel quantity associated with the REEL suffix against the manufacturer's ordering guide. Confirm RoHS compliance status indicated by the Z suffix. Ensure the package type matches the required PCB footprint for the 14-lead SOIC configuration.

Selection Notes

Select this component for applications requiring low noise and high precision in portable systems. The quad configuration allows multiple channels in a single package. Consider the 14-lead SOIC package for standard surface-mount assembly processes.

Part Context

This part belongs to the AD8603/AD8607/AD8609 series of precision micro-power CMOS amplifiers. The AD8609 specifically provides four independent channels, distinguishing it from the single-channel AD8603 and dual-channel AD8607 variants within the same family.

Replacement Considerations

Official substitutes within the same family include the AD8603AUJZ-R2 and AD8607ARMZ. Verify channel count compatibility before substitution.

FAQ

Does the AD8609 exhibit phase reversal?

No, the AD8609 does not exhibit phase inversion even when the input voltage exceeds the maximum input common-mode voltage.

What is the maximum input bias current?

The maximum input bias current is 1 pA at 25°C, increasing to 500 pA over the full temperature range.