AD8802ARUZ-REEL

Overview

The AD8802ARUZ-REEL is a 12-channel, 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It operates on a single +3 V to +5 V supply and features a 20-lead TSSOP package. The device provides independent digitally-controllable voltage outputs via a 3-wire SPI-compatible serial interface. Key specifications include a settling time of 600 ns, differential nonlinearity of ±0.25 LSB, and integral nonlinearity of ±0.5 LSB. It includes a power shutdown mode consuming less than 55 mW and maintains latch settings during shutdown.

Feature Summary

• 12 independent 8-bit DAC channels with individual programmable outputs
• 3-Wire SPI compatible serial input interface for microcontroller control
• Power shutdown mode reduces current consumption while maintaining DAC latch data
• Midscale preset function available on the AD8802 variant

Applications

• Video and audio equipment gain and offset adjustment
• CRT computer graphic display geometric correction
• Portable and battery-operated equipment trimmer replacement
• Voltage-controlled frequencies and bandwidths in video systems

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing. Confirm the specific variant (AD8802 vs AD8804) matches the required reference pin configuration, as the AD8802 lacks a VREFL pin. Check for ESD sensitivity precautions during handling.

Selection Notes

Select the AD8802 if a fixed zero-scale (GND) reference is acceptable and a midscale preset is desired. Choose the AD8804 if independent zero-scale setting via a VREFL pin is required to optimize resolution for limited voltage ranges. Ensure the 3-wire serial interface timing requirements align with the host microcontroller's capabilities.

Part Context

The AD8802/AD8804 series serves as an electronic replacement for mechanical potentiometers in multi-channel adjustment applications. The ARU designation specifies the 20-lead Thin Shrink Small Outline Package (TSSOP). The REEL suffix denotes the specific bulk packaging format for automated assembly.

Replacement Considerations

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