AD8801AR

Overview

The AD8801AR is an octal 8-bit TrimDAC with power shutdown, manufactured by Analog Devices Inc. It provides eight digitally controlled DC voltage outputs in a single SO-16 package. The device operates on a single +3 V to +5 V supply and features a three-wire serial interface for programming. Key specifications include a settling time of 600 ns, integral nonlinearity (INL) of ±0.5 LSB, and differential nonlinearity (DNL) of ±0.25 LSB. It consumes only 5 μA from the power supply and includes a midscale preset function via the RS pin.

Feature Summary

• Eight individually programmable 8-bit DAC channels
• Three-wire serial input interface (SPI compatible)
• Power shutdown mode with latch retention
• Midscale preset capability via RS pin

Applications

• Trimmer potentiometer replacement
• Video and audio equipment gain and offset adjustment
• Portable and battery-operated equipment
• CRT computer graphic display geometric correction

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 AD8801AR when a 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 needed. Ensure the application requires a single-ended reference input range between 0 V and VDD. Verify that the SO-16 surface mount package fits the PCB layout constraints.

Part Context

The AD8801AR belongs to the AD8801/AD8803 family of octal 8-bit TrimDACs. It shares functional similarities with the AD8803 but lacks the VREFL pin, fixing its lower reference limit to ground internally. This variant simplifies circuit design for applications where output ranges start from 0 V.

Replacement Considerations

Public confirmed substitute part numbers: AD8801AN.