AD8644ARUZ-REEL

Overview

The AD8644ARUZ-REEL is a quad, single-supply operational amplifier from Analog Devices, housed in a 14-lead TSSOP package. 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, drawing a typical supply current of 800 μA per amplifier. It provides rail-to-rail input and output capabilities with an output short-circuit current of up to 70 mA. The input offset voltage is typically 1.0 mV, and the common-mode rejection ratio reaches 75 dB.

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
• Immune to output phase reversal within supply rails

Applications

• LCD gamma and VCOM drivers
• Portable instrumentation
• Modems and direct access arrangements
• Audio headphone and line-out amplifiers

Procurement Notes

Verify that the specific ordering suffix corresponds to the 14-lead TSSOP package option RU-14 as indicated in the manufacturer's ordering guide. Confirm RoHS compliance status if required by your assembly specifications. Ensure the ambient operating temperature remains within the specified -20°C to +85°C range during deployment.

Selection Notes

Select this component when a quad configuration is necessary to minimize board space in densely packed designs. It is suitable for applications requiring high output current drive into large capacitive loads. Consider its low power consumption relative to its bandwidth performance for battery-operated systems where efficiency is critical.

Part Context

This part belongs to the AD8614/AD8644 family of precision CMOS amplifiers processed using the HV XFCB technology. This proprietary process utilizes trench-isolated transistors to reduce internal parasitic capacitance, thereby enhancing gain bandwidth and phase margin compared to standard CMOS processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.