AD8801AR-REEL

Overview

The AD8801AR-REEL is an octal 8-bit TrimDAC with power shutdown, manufactured by Analog Devices Inc. It provides eight individually programmable DC voltage outputs in a 16-pin SOIC package. The device operates on a single +3 V to +5 V supply and features a three-wire serial interface for microcontroller control. Key specifications include a settling time of 600 ns, integral nonlinearity (INL) of ±0.5 LSB, and differential nonlinearity (DNL) of ±0.25 LSB. Power consumption is minimized at 5 μA in active mode and includes a shutdown function that maintains latch settings while reducing current draw.

Feature Summary

• Octal 8-Bit Resolution: Provides eight independent DAC channels with 8-bit resolution for precise voltage adjustment.
• Power Shutdown Mode: Reduces power dissipation to ≤ 25 mW and maintains DAC latch settings during low-power states.
• Midscale Preset: Includes an RS pin for asynchronous preset to midscale output setting upon power-up.
• Three-Wire Serial Interface: Compatible with standard SPI/Microwire protocols using CS, CLK, and SDI pins.

Applications

• Trimmer Potentiometer Replacement
• Video and Audio Equipment Gain and Offset Adjustment
• Automatic Adjustment Systems
• Portable and Battery Operated Equipment

Procurement Notes

Verify the 'REEL' suffix indicates tape-and-reel packaging rather than tube packaging. Confirm the component status as End-of-Life (EOL) or obsolete through official manufacturer notifications prior to procurement planning. Ensure compatibility with existing PCB footprints for the SO-16 package.

Selection Notes

Select the AD8801 variant specifically if a fixed midscale preset is required for initial power-up conditions. Choose this part over the AD8803 if independent zero-scale voltage setting via a VREFL pin is not necessary. Verify that the external reference voltage range aligns with the 0 V to VDD constraint for proper operation.

Part Context

The AD8801AR-REEL belongs to the AD8801/AD8803 family of octal 8-bit TrimDACs. It is functionally similar to the AD8803 but lacks the VREFL pin, fixing the lower reference limit to ground internally. The 'AR' designation specifies the SO-16 surface mount package, while '-REEL' denotes the specific reel packaging format for automated assembly.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating the AD8803ARZ if independent zero-scale adjustment is acceptable, or other octal DACs from the manufacturer's portfolio if EOL status prevents further sourcing.