AD8644ARU-REEL

Overview

The AD8644ARU-REEL is a quad, single-supply operational amplifier manufactured by Analog Devices Inc. It features a unity-gain bandwidth of 5.5 MHz and a slew rate of 7.5 V/μs. The device operates on supply voltages ranging from 5 V to 18 V with a typical supply current of 800 μA per amplifier. It provides rail-to-rail input and output capabilities, an offset voltage of 1.0 mV, and an output short-circuit current of 70 mA. The component is housed in a 14-lead TSSOP package and functions within a temperature range of –20°C to +85°C.

Feature Summary

• Rail-to-rail inputs and outputs for maximum dynamic range
• High capacitive load drive stability without phase reversal
• Low supply current optimized for portable designs
• Immunity to output phase reversal under normal operation

Applications

• LCD gamma and VCOM drivers
• Modems and direct access arrangements
• Portable instrumentation
• Headphone and microphone preamplifiers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and RoHS compliance status. Ensure the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Confirm that the delivered units match the specified 14-lead TSSOP form factor and electrical characteristics outlined in the datasheet before integration into production.

Selection Notes

Select this component when a quad amplifier configuration is required for space-constrained applications. The device is suitable for designs needing rail-to-rail signal swing and high output current capability. Consider the thermal resistance of the TSSOP package for power dissipation calculations. Verify that the operating voltage range aligns with the system's single-supply constraints and that the bandwidth meets the signal processing requirements.

Part Context

This part belongs to the AD8614/AD8644 family of single-supply operational amplifiers. The AD8644 variant specifically integrates four independent amplifiers within a single package, whereas the AD8614 contains only one. Both share identical electrical specifications and are processed using the Analog Devices HV XFCB process technology to achieve low parasitic capacitance and improved performance metrics.

Replacement Considerations

The AD8614 serves as the single-channel equivalent within the same product family. Other quad variants such as the AD8644AR or AD8644ARZ offer identical functionality but differ in packaging options like SOIC or RoHS compliance.