AD8522ARZ

Overview

The AD8522ARZ is a dual 12-bit, single-supply voltage output digital-to-analog converter (DAC) in a 14-lead SOIC package. It features a serial digital interface with daisy-chaining capability via an SDO pin. The device includes an onboard 2.5 V bandgap reference and buffered rail-to-rail voltage outputs with a full-scale range of 4.095 V (1 mV/LSB). Each DAC channel provides ±5 mA output current drive. Key electrical specifications include a typical settling time of 16 μs to ±1 LSB, relative accuracy of ±1.5 LSB INL, and power dissipation as low as 5 mW per DAC at +5 V supply.

Feature Summary

• Dual 12-bit resolution with laser-trimmed 4.095 V full-scale output
• Integrated 2.5 V curvature-corrected bandgap reference
• Serial interface supporting hardware or software load modes
• Rail-to-rail output amplifiers capable of driving ±5 mA

Applications

• Digitally controlled calibration systems
• Servo control loops
• Process control equipment
• Portable instrumentation
• Cellular base station voltage adjustment

Procurement Notes

Verify the suffix ARZ indicates the 14-lead SOIC package variant. Confirm the operating temperature range is -40°C to +85°C. Ensure logic levels match CMOS standards for optimal power consumption. Check for ESD sensitivity precautions during handling.

Selection Notes

Select this component for applications requiring low power consumption and no external components. It is suitable for +5 V only systems. Consider the 16 μs settling time for speed requirements. Verify that the 500 pF capacitive load limit meets the application's output loading needs.

Part Context

The AD8522 is part of Analog Devices' low-cost, monolithic DAC family fabricated using CBCMOS process technology. It integrates digital logic, analog converters, and reference circuits into a single chip to simplify system design and reduce board space compared to discrete solutions.

Replacement Considerations

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