AD8801ARZ

Overview

The AD8801ARZ is an octal 8-bit TrimDAC manufactured by Analog Devices Inc. in a 16-pin SOIC package. It provides eight individually programmable DC voltage outputs controlled via a three-wire serial interface (CS, CLK, SDI). The device operates on a single +3 V to +5 V supply with a typical quiescent current of 5 μA. Key static accuracy specifications include ±1/2 LSB integral nonlinearity (INL), ±1/4 LSB differential nonlinearity (DNL), and a settling time of 600 ns. The AD8801 features a midscale preset function activated by the RS pin.

Feature Summary

• Eight digitally controlled DC voltage outputs replacing mechanical trimmers
• Three-wire serial interface compatible with standard microcontrollers
• Power shutdown mode reduces consumption to ≤ 25 mW while maintaining latch settings
• Midscale preset capability for simplified initial power-up conditions

Applications

• Automatic adjustment systems
• Trimmer potentiometer replacement
• Video and audio equipment gain and offset adjustment
• Portable and battery-operated equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as required by local regulations. Ensure proper electrostatic discharge (ESD) handling procedures are followed during storage and assembly due to the sensitivity of the CMOS input structure.

Selection Notes

Select the AD8801ARZ when a fixed zero-scale output referenced to ground is sufficient. Unlike the AD8803 variant, this model lacks a dedicated VREFL pin, meaning the lower output limit is internally tied to GND. Verify that the required output voltage range aligns with the available VREFH reference input capabilities.

Part Context

This component belongs to the AD8801/AD8803 family of octal 8-bit TrimDACs. It shares functional similarities with the AD8803 but differs in reference configuration; the AD8801 utilizes an internal connection to ground for the low-side reference, whereas the AD8803 offers independent control over both high and low reference voltages.

Replacement Considerations

The AD8803ARZ serves as a functional substitute if independent zero-scale voltage setting via a VREFL pin is required. Other members of the series include the AD8801AN and AD8803AN in PDIP-16 packages.