Analog Devices Inc. AD9744ARURL7

Overview

AD9744ARURL7 from Analog Devices is a 14-bit, 210 MSPS current-output digital-to-analog converter (DAC) optimized for wideband transmit signal paths in communication systems. It delivers 83 dBc SFDR at 5 MHz output, supports 2–20 mA differential current outputs, integrates a 1.2 V temperature-compensated band gap reference, and operates from a single 3.3 V supply with 135 mW power dissipation.

For engineers reviewing the AD9744ARURL7 datasheet, AD9744ARURL7 pinout, AD9744ARURL7 application, or AD9744ARURL7 equivalent, this page provides verified specifications, package mapping to 32-lead LFCSP, functional role in IF/RF synthesis, and validated alternative options for high-speed DAC selection in base station and instrumentation designs.

Technical Context

The AD9744ARURL7 implements a segmented current-source architecture with proprietary switching to minimize glitch energy (5 pV·s) and enhance spurious-free dynamic range. Its edge-triggered CMOS-compatible latches accept 14-bit data at up to 210 MSPS, while the on-chip 1.2 V reference enables self-contained operation without external precision voltage sources.

Differential current outputs (IOUTA/IOUTB) support transformer-coupled or op amp-based reconstruction, with 1.25 V output compliance range and 100 kΩ output resistance. The device supports both twos complement and straight binary input formats via MODE pin configuration, and includes SLEEP mode reducing standby power to 15 mW.

Key Specifications

Pinout & Package

AD9744ARURL7 is packaged in a 32-lead LFCSP (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are fully defined in Analog Devices' Rev. C datasheet, Figure 4 and Table 6.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed DAC applications.

Compared with AD9744ARURL7, AD9742ARUZ offers identical speed and footprint at lower resolution and cost, while AD9787BCPZ delivers higher fidelity and advanced features at increased complexity and power-making AD9744ARURL7 the optimal balance for 14-bit, 210 MSPS IF DAC requirements.

Availability

AD9744ARURL7 is available at Aetrix Electronics and suitable for wireless infrastructure, instrumentation signal generation, digital radio links, and DDS-based waveform synthesis requiring stable component supply and long-term production continuity.

Supply support for AD9744ARURL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technologies, headquartered in Norwood, MA, serving communications, industrial, and instrumentation markets since 1965.

The AD9744ARURL7 belongs to the TxDAC® family-designed specifically for high-fidelity, low-power transmit signal chains in wireless base stations, point-to-point radios, and precision test equipment.

FAQ

What is the maximum clock frequency supported by the AD9744ARURL7?

The AD9744ARURL7 supports a maximum update rate of 210 MSPS, verified in the Rev. C datasheet Table 2. This applies to both single-ended (CLOCK pin) and differential (CLK+/CLK−) clock configurations. At 210 MSPS, the device maintains 68 dBc SFDR at 41 MHz output and 64 dBc at 69 MHz, confirming its suitability for wideband IF synthesis. The AD9744ARURL7's timing margins-including 1.5 ns latch pulse width and 1 ns propagation delay-are designed to sustain reliable operation at this rate under specified supply and temperature conditions.

Does the AD9744ARURL7 require an external reference voltage?

No, the AD9744ARURL7 does not require an external reference voltage because it integrates a 1.2 V temperature-compensated band gap reference (±50 ppm/°C drift). When enabled, REFIO outputs this reference, and REFLO must be connected to ACOM. A 0.1 µF capacitor is required from REFIO to ACOM for stability. External references may be used via REFIO, but the internal reference eliminates BOM components and simplifies design for most transmit-path applications where 1.2 V ±5% accuracy suffices.

What package type is used for the AD9744ARURL7?

The AD9744ARURL7 uses a 32-lead LFCSP package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad, as confirmed in the Rev. C datasheet Figure 4 and Ordering Guide. This differs from SOIC/TSSOP variants (e.g., AD9744ARUZ) and provides superior thermal resistance (θJA = 32.5°C/W), critical for sustained 210 MSPS operation. The exposed pad must be soldered to a copper ground plane to meet thermal and electrical performance specifications.

How does the SLEEP mode affect power consumption of the AD9744ARURL7?

Asserting the SLEEP pin high reduces the AD9744ARURL7's analog supply current (IAVDD) to 5–6 mA, lowering total power dissipation to approximately 15 mW-down from 135 mW in active mode. This state disables the current source array and reference amplifier while retaining register contents. Recovery time is negligible (<100 ns), making SLEEP ideal for burst-mode transmission or idle periods in portable instrumentation. The pin includes an internal pull-down, allowing it to float if unused.

Can the AD9744ARURL7 operate with both twos complement and straight binary input formats?

Yes, the AD9744ARURL7 supports both twos complement and straight binary data formats, selected by the MODE pin: tie MODE to DVDD for twos complement (DB13 = sign bit), or to DCOM for straight binary (all bits magnitude). This flexibility allows seamless integration with different FPGA IP cores or processor interfaces without external logic translation. The digital input thresholds (2.1 V min logic high, 0.9 V max logic low) and timing (tS = 2.0 ns, tH = 1.5 ns) are identical in both modes.