AD7244JRZ-REEL

Overview

The AD7244JRZ-REEL is a dual, complete, 14-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It integrates two DAC channels, a 3 V buried Zener reference, output buffer amplifiers, and high-speed serial interface logic. The device operates from ±5 V supplies, providing an analog output range of ±3 V. Key electrical parameters include a settling time of 4 μs to ±1/2 LSB, typical power dissipation of 130 mW, and an operating temperature range of 0°C to +70°C for the J version. It is housed in a 28-pin SOIC package.

Feature Summary

• Dual 14-bit resolution with on-chip 3 V voltage reference
• Fast settling time of 4 μs to ±1/2 LSB
• High-speed serial interface compatible with DSPs and microcontrollers
• Low power consumption: typically 130 mW

Applications

• Industrial process control systems requiring precise voltage generation
• Data acquisition systems utilizing serial communication protocols
• Test and measurement equipment needing dual-channel analog outputs

Procurement Notes

Verify the specific suffix 'JRZ-REEL' against current manufacturer documentation to confirm package type (SOIC-28) and reel packaging status. Check for end-of-life notifications or discontinuation notices, as older Analog Devices components may have limited availability or be subject to obsolescence. Ensure compatibility with existing PCB footprints and serial interface timing requirements.

Selection Notes

Select the AD7244JRZ-REEL when dual 14-bit resolution and fast settling times are required in a compact SOIC package. Compare against the AD7242 variant if 12-bit resolution is sufficient, noting that both share pinouts for easy upgrades. Consider the J version's 0°C to +70°C temperature range; choose A or S versions for extended industrial or military temperature ranges if necessary.

Part Context

The AD7244 is part of the LC2MOS family of complete DACs, fabricated using Linear Compatible CMOS technology. It shares the same pinout and interface protocol with the AD7242 (12-bit version), facilitating design flexibility. The device is designed for applications requiring direct interfacing with standard serial buses without additional parallel interface hardware.

Replacement Considerations

The AD7242JRZ offers identical pinout and functionality with 12-bit resolution. For extended temperature ranges, consider the AD7244ARZ (-40°C to +85°C). Verify that any substitute maintains the 28-pin SOIC package and serial interface timing specifications.