AD8570ARU

Overview

The AD8570ARU is an obsolete, single-supply buffer amplifier from Analog Devices, featuring eight channels in a 20-lead TSSOP package. It operates on a 4.5 V to 16 V supply with rail-to-rail input and output capabilities. Key electrical specifications include a maximum offset voltage of 10 mV, a slew rate of 6 V/µs, and a bandwidth of 6 MHz. The device provides 35 mA continuous and 250 mA peak output current, maintaining stability with capacitive loads up to 1 µF.

Feature Summary

• Single-supply operation with input capability extending beyond the rails
• Rail-to-rail output swing for maximum dynamic range
• High output drive capability supporting large capacitive loads

Applications

• LCD reference drivers
• Portable electronics
• Communications equipment

Procurement Notes

This component is officially classified as obsolete by the manufacturer. Verify availability through authorized distributors or secondary market sources. Confirm that the specific RU-20 package variant matches your PCB footprint requirements before procurement. Ensure compliance with ESD handling protocols during storage and assembly.

Selection Notes

Select this part for applications requiring high channel density in a compact surface-mount package. It is suitable where rail-to-rail performance and moderate speed are prioritized over low noise. Consider thermal dissipation limits when operating at higher ambient temperatures or with significant load currents.

Part Context

The AD8570 belongs to the AD856x family of low-cost, single-supply buffer amplifiers built on a high-voltage CBCMOS process. This family includes the two-channel AD8568 and four-channel AD8569, offering scalable channel counts for LCD monitor applications and general-purpose buffering needs.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. As the AD8570 is obsolete, evaluate alternative buffer amplifiers with similar channel counts, package dimensions, and electrical characteristics.