AD8582AR

Overview

The AD8582AR is a dual 12-bit digital-to-analog converter (DAC) in a 24-lead SOIC package. It operates from a single +5 V supply and integrates an R-2R DAC, rail-to-rail output amplifier, and laser-trimmed 2.5 V bandgap reference. The device provides a full-scale output of 4.095 V with 1 mV/LSB resolution. Key electrical parameters include a typical settling time of 16 µs to ±1 LSB, INL/DNL of ±0.75 LSB, and power dissipation as low as 5 mW. It features a high-speed parallel interface compatible with processors without wait states.

Feature Summary

• Dual 12-bit voltage-output DAC with integrated 2.5 V reference and rail-to-rail amplifiers
• Single +5 V supply operation with 5 mW typical power consumption
• High-speed parallel data interface with double-buffered input structure for simultaneous updates
• Asynchronous reset capability to zero or mid-scale via MSB pin

Applications

• Digitally controlled calibration systems
• Portable equipment requiring low power
• Servo control loops
• Process control equipment
• PC peripherals

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current catalog to confirm package type and temperature range. The 'AR' suffix denotes the 24-lead SOIC variant. Confirm RoHS compliance status if required by the application, as manufacturing processes may evolve. Check for any product change notices (PCN) regarding material composition or assembly location changes before finalizing procurement.

Selection Notes

Select the AD8582AR when a dual-channel, low-power, single-supply DAC is needed. Ensure the system can provide a stable +5 V supply within ±5% tolerance. Verify that the load requirements do not exceed the ±5 mA drive capability or 500 pF capacitive load limit without external buffering. Consider the parallel interface timing constraints, specifically the 30 ns setup and hold times, for compatibility with the host microprocessor.

Part Context

The AD8582 is part of Analog Devices' complete dual DAC family, designed for cost-effective +5 V systems. It utilizes CBCMOS technology to combine low-noise bipolar analog performance with CMOS logic efficiency. The component is available in both Plastic DIP (AD8582AN) and SOIC (AD8582AR) packages, covering industrial temperature ranges.

Replacement Considerations

The AD8582AN serves as the direct through-hole replacement for the surface-mount AD8582AR, sharing identical electrical specifications and functionality. Both variants belong to the same base product number AD8582.