AD8522AR-REEL

Overview

The AD8522AR-REEL is a dual 12-bit, single-supply voltage output digital-to-analog converter (DAC) fabricated in a CBCMOS process. It operates on a +5 V supply and features a serial digital interface with onboard reference and buffered voltage outputs. The device provides a laser-trimmed full-scale output of 4.095 V, yielding 1 mV per LSB resolution. Key electrical parameters include a typical settling time of 16 μs to ±1 LSB, relative accuracy of ±1.5 LSB INL, and an internal 2.5 V bandgap reference. It supports both hardware-load and software-load modes via a 16-bit serial word containing data and address bits.

Feature Summary

• Dual 12-bit DACs with 4.095 V full-scale output and 1 mV/LSB resolution
• Serial interface compatible with microcontrollers using CS, CLK, SDI, and SDO pins
• Internal 2.5 V curvature-corrected bandgap reference available at VREF pin
• Rail-to-rail output amplifiers capable of driving ±5 mA loads

Applications

• Digitally controlled calibration systems
• Servo controls and process control equipment
• Portable instrumentation and computer peripherals
• Cellular base station voltage adjustment

Procurement Notes

Verify the package type matches the required application, as the AD8522 series includes both PDIP-14 and SO-14 options. Confirm that the operating temperature range of -40°C to +85°C aligns with system requirements. Ensure proper ESD precautions are taken during handling due to the sensitivity of the CMOS input structures. Check for any specific revision markings if long-term supply continuity is critical.

Selection Notes

Select this component when a low-cost, single-supply dual DAC is needed for +5 V systems. It is suitable for applications requiring minimal external components and direct microcontroller interfacing. Consider the 16 μs settling time and ±1.5 LSB accuracy for precision requirements. Note that the VREF pin requires buffering if driving heavy external loads, and capacitive loads should not exceed 500 pF without stability verification.

Part Context

The AD8522AR-REEL is the surface-mount variant of the AD8522 family, housed in a 14-lead SOIC package. It shares functional specifications with the through-hole AD8522AN but offers space-saving benefits with a 1.5 mm height. The 'REEL' suffix indicates it is supplied in tape-and-reel packaging for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material.