AD7228LP-REEL

Overview

The AD7228LP-REEL is an octal 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates eight R-2R ladder DACs with output amplifiers on a single monolithic chip, utilizing CMOS technology for low power consumption. The device features a parallel data interface and buffered voltage outputs. Key electrical specifications include an 8-bit resolution, 8 channels, and a typical settling time of 5 microseconds. It operates within a temperature range of -40°C to +85°C and is supplied in a PLCC-28 package.

Feature Summary

• Octal architecture integrating eight independent 8-bit DACs with internal output buffers
• CMOS construction ensuring low power dissipation and high speed performance
• Parallel digital interface compatible with standard logic families
• Monolithic design providing matched channel characteristics and minimal external component requirements

Applications

• Portable instrumentation requiring multi-channel signal generation
• Battery-powered systems due to low power consumption
• Industrial process control loops needing multiple analog outputs
• Data acquisition systems requiring simultaneous digital-to-analog conversion

Procurement Notes

Verify the specific suffix 'LP' against official Analog Devices documentation to confirm pinout compatibility and electrical tolerances relative to other AD7228 variants. Confirm the 'REEL' packaging designation matches required manufacturing automation standards. Ensure the source document explicitly lists this exact part number to avoid substitution errors with similar packages like DIP or SOIC.

Selection Notes

Select the AD7228LP-REEL when eight isolated analog outputs are required from a single IC footprint. The PLCC-28 package is suitable for surface-mount assembly where space is constrained but through-hole options are unavailable. Verify that the parallel interface timing meets system clock requirements and that the external reference voltage capability aligns with the application's accuracy needs.

Part Context

This component belongs to the AD7228 family of octal DACs, which are designed for applications requiring multiple analog outputs from a compact form factor. The LP variant specifically denotes the PLCC-28 plastic leaded chip carrier package. This family is characterized by its use of CMOS technology to achieve low power operation while maintaining adequate speed for general-purpose instrumentation tasks.

Replacement Considerations

Cross-reference with AD7228LZ or AD7228LNZ if package changes are acceptable. Verify functional equivalence with AD7528-based solutions only if pinouts and performance specs match exactly. Do not assume interchangeability with higher-resolution octal DACs without verifying interface and power supply compatibility.