Analog Devices Inc. AD9744ACPRL7

Overview

AD9744ACPRL7 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, 77 dB SNR at 125 MSPS, and differential current outputs adjustable from 2 mA to 20 mA, enabling high-fidelity IF synthesis in base station transceivers.

For engineers reviewing the AD9744ACPRL7 datasheet, AD9744ACPRL7 pinout, AD9744ACPRL7 application, or AD9744ACPRL7 equivalent, this page provides verified specifications, package mapping to 32-lead LFCSP, confirmed TxDAC family pin compatibility, real-world dynamic performance trade-offs across clock rates, and validated alternatives for RF transmit chain design.

Technical Context

The AD9744ACPRL7 implements a segmented current-source architecture with proprietary switching to minimize glitch energy (5 pV·s) and suppress spurs-critical for multitone UMTS and LTE waveforms. Its edge-triggered CMOS interface supports 210 MSPS update rates while maintaining 11 ns settling time and 2.5 ns rise/fall times.

On-chip 1.2 V temperature-compensated band gap reference (±50 ppm/°C drift) and full-scale current adjustment (FS ADJ) enable stable analog output without external components. Dual supply domains (AVDD/DVDD/CLKVDD, all 2.7–3.6 V) isolate analog, digital, and clock sections to preserve SFDR across temperature (−40°C to +85°C).

Key Specifications

Pinout & Package

AD9744ACPRL7 is packaged in a 32-lead LFCSP (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are fully compatible with the TxDAC family's SOIC/TSSOP variants, enabling drop-in replacement across resolution grades.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9744ACPRL7, AD9783BCPZ trades integrated reference and lower power for higher resolution and speed-ideal for future-proofing-but AD9744ACPRL7 delivers superior SFDR per watt in established IF-based transceivers, while MAX5895EGK+ prioritizes raw speed over spectral purity in direct-sampling applications.

Availability

AD9744ACPRL7 is available at Aetrix Electronics and suitable for base station transmitters, wireless local loops, digital radio links, and instrumentation requiring stable component supply with guaranteed long-term sourcing.

Supply support for AD9744ACPRL7 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 is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving communications, industrial, and aerospace markets since 1965.

The AD9744ACPRL7 belongs to the TxDAC® family-designed specifically for transmit-path signal reconstruction in wireless infrastructure, emphasizing SFDR, power efficiency, and pin-compatible scalability across resolution grades.

FAQ

What is the maximum clock frequency supported by the AD9744ACPRL7?

The AD9744ACPRL7 supports a maximum output update rate of 210 MSPS, verified in the Rev. C datasheet under Dynamic Specifications. This applies to both single-ended and differential clock configurations on the LFCSP package. At 210 MSPS, the device achieves 68 dBc SFDR at 41 MHz output and 64 dBc at 69 MHz output, confirming stable operation at its rated speed. The AD9744ACPRL7 must be operated within AVDD/DVDD/CLKVDD limits of 2.7 V to 3.6 V to maintain this performance.

Does the AD9744ACPRL7 include an internal voltage reference?

Yes, the AD9744ACPRL7 integrates a 1.2 V temperature-compensated band gap reference with ±50 ppm/°C drift, specified in the DC Specifications table. When enabled, REFIO outputs this reference and requires a 0.1 µF capacitor to ACOM. REFLO serves as the reference ground node. This eliminates need for external reference ICs in most IF transmitter designs, reducing BOM count and PCB area while maintaining 83 dBc SFDR at 5 MHz output.

What package type is used for the AD9744ACPRL7?

The AD9744ACPRL7 uses a 32-lead LFCSP package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad, as confirmed in the Ordering Guide and Pin Configurations section of the Rev. C datasheet. This package delivers θJA = 32.5°C/W-significantly lower than SOIC (55.9°C/W) or TSSOP (67.7°C/W)-making it suitable for thermally constrained RF modules. The pinout matches the TxDAC family's 28-lead variants for hardware reuse.

How does the AD9744ACPRL7 handle data format selection?

The AD9744ACPRL7 supports both twos complement and straight binary data formats via the MODE pin: connect MODE to DVDD for twos complement, or to DCOM for straight binary. This configuration is latched on power-up and remains static during operation. The digital interface accepts 14-bit parallel data (DB13–DB0) with 2.0 ns setup and 1.5 ns hold times, ensuring reliable capture at 210 MSPS without external serialization logic.

What is the power consumption of the AD9744ACPRL7 in active and power-down modes?

In active mode at 3.3 V, the AD9744ACPRL7 dissipates 135 mW (typical), composed of 36 mA analog supply current, 9 mA digital supply current, and 6 mA clock supply current. In power-down mode (SLEEP = high), total dissipation drops to 15 mW, verified in the Power Dissipation section of the datasheet. This low standby power enables rapid wake-up in burst-mode transmitters without thermal re-stabilization delays.