AD7226KRZ-REEL

Overview

The AD7226KRZ-REEL is a quad 8-bit digital-to-analog converter (DAC) fabricated in LC2MOS process. It integrates four voltage-output DACs with buffer amplifiers and interface logic on a single chip. The device features separate on-chip latches for each channel, controlled via a common 8-bit TTL/CMOS compatible input port using address lines A0, A1, and write signal WR. Static performance includes ±0.5 LSB relative accuracy and ±1 LSB differential nonlinearity under dual supply conditions (VDD = 11.4 V to 16.5 V, VSS = –5 V). Dynamic settling time is 4 µs max. The K-version operates from –40°C to +85°C. This specific part number denotes the SOIC-20 package variant supplied in reel packaging.

Feature Summary

• Four independent 8-bit DACs with integrated output buffer amplifiers capable of driving up to 5 mA.
• Microprocessor-compatible parallel interface with individual data latches per channel.
• Laser-trimmed amplifier offsets eliminate the need for external nulling adjustments.
• Supports both single-supply (+15 V) and dual-supply (+15 V/–5 V) operation.

Applications

• Process control systems requiring multi-channel analog output.
• Automatic test equipment for signal generation.
• Automatic calibration of large system parameters such as gain and offset.

Procurement Notes

Verify that the 'KRZ' suffix corresponds to the SOIC-20 package and REEL tape-and-reel packaging configuration as specified by Analog Devices. Confirm RoHS compliance status for the specific manufacturing lot. Ensure the receiving facility handles ESD-sensitive components appropriately during unpacking and assembly.

Selection Notes

Select this component when four synchronized 8-bit voltage outputs are required in a compact form factor. The SOIC-20 package is suitable for surface-mount applications where board space is limited compared to DIP packages. Verify that the system power supply architecture supports the required VDD range of 11.4 V to 16.5 V and that the reference voltage remains within 2 V to (VDD – 4 V).

Part Context

The AD7226 series belongs to Analog Devices' family of high-speed CMOS D/A converters. The 'K' designation indicates the industrial temperature range (-40°C to +85°C). The 'RZ' suffix typically identifies the SOIC-20 plastic small outline package with lead-free solder plating compliant with EU directives. The 'REEL' designation confirms bulk tape-and-reel shipping format for automated placement.

Replacement Considerations

Direct pin-compatible replacements include other variants of the AD7226 family such as AD7226KNZ (DIP-20) or AD7226SJZ (PLCC-20), provided the package footprint matches the PCB design. Cross-package substitution requires schematic review for pinout differences between DIP, SOIC, SSOP, and PLCC configurations.