AD7249ARZ-REEL

Digital To Analog Converters Overview

The AD7249ARZ-REEL is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, packaged in a 16-lead SOIC reel. It integrates on-chip Zener voltage reference and output amplifiers capable of driving +10 V across a 2 kΩ load. The device supports single or dual supply operation with selectable output ranges: 0 V to +5 V, 0 V to +10 V, and ±5 V. It features a 3-wire serial interface allowing data rates up to 2 MHz for a DAC update rate of 125 kHz. Key static performance metrics include ±1 LSB relative accuracy, ±0.9 LSB differential nonlinearity, and a settling time of 10 µs.

Digital To Analog Converters Feature Summary

• Dual 12-bit CMOS DAC channels with integrated 5 V Zener reference
• Three selectable output ranges per channel: 0–5 V, 0–10 V, and ±5 V
• Serial interface supporting 125 kHz update rate with 16-bit data word
• Low power dissipation with typical IDD of 11 mA

Digital To Analog Converters Applications

• Process control systems
• Industrial automation equipment
• Digital signal processing input/output ports

Digital To Analog Converters Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging suitable for automated assembly. Confirm the A version specifications, which operate within –40 °C to +85 °C and require VDD/VSS tolerances of ±10%. Ensure compatibility with standard 3-wire serial protocols used by DSP processors and microcontrollers.

Digital To Analog Converters Selection Notes

Select this component when dual independent 12-bit outputs are required in a compact SOIC package. Choose the bipolar ±5 V range only if dual supplies (VSS = –12 V to –15 V) are available. For unipolar 0–10 V operation, ensure VDD is at least 14.25 V to maintain amplifier headroom. Consider the S version if extended temperature range (–55 °C to +125 °C) is needed.

Digital To Analog Converters Part Context

The AD7249 belongs to the DACPORT family, utilizing LC2MOS technology for mixed-signal integration. It is distinct from parallel-input DACs like the AD7247, offering a minimized pin count through its serial interface. The ARZ designation confirms lead-free construction and RoHS compliance within the industrial temperature grade.

Digital To Analog Converters Replacement Considerations

The AD7249AR is a direct predecessor but has been discontinued. The AD7249ARZ serves as the primary replacement, maintaining identical electrical characteristics and pinout while adhering to current environmental standards.