AD8803ARZ-REEL

Overview

The AD8803ARZ-REEL is an octal 8-bit TrimDAC manufactured by Analog Devices Inc. It provides eight individually programmable DC voltage outputs within a single SOIC-16 package. The device operates on a single +3 V to +5 V supply and features a three-wire serial interface for digital control. Key specifications include a settling time of 0.6 μs, integral nonlinearity error of ±0.5 LSB, and differential nonlinearity of ±0.25 LSB. The AD8803 includes a power shutdown mode with current consumption ≤25 mW and maintains latch settings during shutdown. It allows independent setting of the zero-scale voltage via the VREFL pin.

Feature Summary

• Octal 8-Bit DAC: Eight digitally controlled DC voltage outputs replace mechanical trimmers.
• External Reference Control: Separate VREFH and VREFL pins allow independent full-scale and zero-scale voltage settings.
• Low Power Shutdown: Active-low SHDN pin reduces power dissipation to ≤25 mW while maintaining DAC latch data.
• Serial Interface: Standard three-wire (CS, CLK, SDI) serial input loading simplifies microcontroller interfacing.

Applications

• Automatic adjustment circuits
• Trimmer potentiometer replacement
• Video and audio equipment gain and offset adjustment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Check for end-of-life notifications regarding discontinuation schedules. Ensure proper ESD handling procedures are followed during storage and assembly due to device sensitivity.

Selection Notes

Select the AD8803 over the AD8801 when independent zero-scale voltage adjustment is required via the VREFL pin. Verify that the application requires eight channels; otherwise, consider alternative channel counts. Ensure the operating temperature range of -40°C to +85°C meets system requirements. Confirm compatibility with the available serial clock speeds and logic voltage levels.

Part Context

The AD8803 belongs to the AD8801/AD8803 family of octal 8-bit TrimDACs. It shares the same functional block diagram and serial interface protocol as the AD8801, differing primarily in the availability of the VREFL pin for external reference control. The REEL suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes.

Replacement Considerations

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