AD8522JRU-REEL

Overview

The AD8522JRU-REEL is a dual 12-bit, single-supply voltage output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It operates on a +5 V supply and features a serial digital interface with a 16-bit word format containing 12-bit data and address bits. The device includes an onboard 2.5 V bandgap reference and buffered rail-to-rail voltage outputs capable of driving ±5 mA. Key electrical specifications include a typical settling time of 16 μs to ±1 LSB, a full-scale output of 4.095 V, and a relative accuracy of ±1.5 LSB. It is housed in a 14-lead SOIC package.

Feature Summary

• Dual 12-bit DACs with laser-trimmed 4.095 V full-scale output (1 mV/LSB resolution)
• Integrated 2.5 V curvature-corrected bandgap reference available at the VREF pin
• Serial interface supporting hardware-load and software-load modes via CS, CLK, SDI, LDA, and LDB pins
• Rail-to-rail output amplifiers with ±5 mA drive capability and up to 500 pF capacitive load stability

Applications

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

Procurement Notes

Verify that the ordering suffix 'JRU' corresponds to the specified temperature range and package type as defined in the manufacturer's official ordering guide. Confirm that the reel packaging matches the required quantity for production integration. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structures.

Selection Notes

Select this component for applications requiring low power consumption (5 mW/DAC) and precise voltage generation from a single +5 V supply. It is suitable for designs needing daisy-chaining capabilities via the SDO pin. Consider the 16 μs settling time and ±1.5 LSB INL when determining suitability for high-speed or high-precision signal generation tasks.

Part Context

The AD8522 is part of a family of complete dual 12-bit DACs fabricated using CBCMOS process technology. This technology combines low-power CMOS logic with complementary bipolar transistors to achieve good analog accuracy. The device eliminates the need for external components by integrating the reference and output buffers, simplifying board layout for +5 V-only systems.

Replacement Considerations

Publicly confirmed substitute part numbers for the AD8522JRU-REEL are not available in the provided documentation. Verify compatibility with existing system interfaces if considering alternative dual 12-bit DACs.