AD7226BRS-REEL

Overview

The AD7226BRS-REEL is a quad 8-bit voltage-output digital-to-analog converter (DAC) fabricated in LC2MOS process. It integrates four DACs with output buffer amplifiers and interface logic on a single chip, requiring no external trims. The device features separate on-chip latches for each channel, loaded via a common 8-bit TTL/CMOS compatible input port controlled by A0, A1, and WR signals. Each buffer amplifier can drive up to 5 mA of output current with laser-trimmed offsets. Specified performance is guaranteed for reference voltages from 2 V to 12.5 V with dual supplies or 10 V with a single supply. Key static parameters include ±0.5 LSB relative accuracy and 4 µs settling time.

Feature Summary

• Four independent 8-bit DACs with integrated buffered voltage outputs
• TTL/CMOS compatible parallel interface with individual data latches
• Laser-trimmed amplifier offsets eliminate need for user calibration
• Single-supply operation capability with wide reference voltage range

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 the B suffix indicates the industrial temperature grade (-40°C to +85°C). Confirm the RS suffix corresponds to the SOIC-20 package and REEL7 denotes tape-and-reel packaging quantity. Ensure the source document explicitly links these suffixes to the specific physical and environmental attributes for this part number.

Selection Notes

Select the AD7226BRS-REEL when four synchronized 8-bit voltage outputs are required in a compact form factor. The parallel interface suits microprocessors with available address lines for latch selection. Verify that the 4 µs settling time meets system speed requirements and that the 5 mA drive current is sufficient for the load impedance without additional buffering.

Part Context

The AD7226 belongs to Analog Devices' LC2MOS family of high-speed data converters. This technology allows integration of precision analog circuits with high-speed digital logic on a monolithic chip. The quad configuration reduces board space compared to discrete solutions, offering inherent channel-to-channel matching due to simultaneous fabrication.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material.