Analog Devices Inc. AD9788-DPG2-EBZ

Overview

AD9788-DPG2-EBZ from Analog Devices is a high-performance evaluation board for the AD9788 dual 16-bit, 800 MSPS TxDAC® digital-to-analog converter. It enables full characterization of the DAC's complex digital upconversion, low-power 32-bit NCO, I/Q gain/phase/offset compensation, and inverse sinc filtering-targeting wireless infrastructure transmitters operating up to Nyquist frequency with W-CDMA, LTE, and WiMAX signal synthesis.

For engineers reviewing the AD9788-DPG2-EBZ datasheet, AD9788-DPG2-EBZ pinout, AD9788-DPG2-EBZ application, or AD9788-DPG2-EBZ equivalent, this board provides validated FPGA interface timing, synchronized multi-device operation, SPI register access, and analog output conditioning optimized for quadrature modulator interfacing (e.g., ADL5375) and RF signal chain validation.

Technical Context

The AD9788-DPG2-EBZ implements the complete signal path for the AD9788 DAC: dual 16-bit CMOS data ports (P1D[15:0], P2D[15:0]), differential REFCLK± input (up to 900 MHz), SYNC_I±/SYNC_O± synchronization interface, and fully buffered differential current outputs (OUT1_P/N, OUT2_P/N) with auxiliary DACs for I/Q calibration. It integrates on-board clock conditioning, power sequencing, and SPI interface circuitry to support real-time register programming and readback.

It supports all AD9788 interpolation modes (1×–8×), digital amplitude/phase correction, and NCO carrier placement across the full DAC bandwidth. The board includes configurable termination networks for 25 Ω or 50 Ω loads, DC-coupled analog output paths, and software-controllable TXENABLE and reset logic aligned with AD9788's 22 ms wake-up/sleep timing.

Key Specifications

Availability

AD9788-DPG2-EBZ is available at Aetrix Electronics and suitable for wireless infrastructure development, RF transceiver prototyping, and high-speed DAC validation requiring stable component supply, traceable sourcing, and long-term design-in support.

Supply support for AD9788-DPG2-EBZ 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 digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.

The AD9788-DPG2-EBZ belongs to Analog Devices' TxDAC® evaluation platform family, designed specifically to accelerate development of wideband, direct-conversion transmit architectures for 4G/5G base stations, point-to-point radios, and software-defined radio systems.

FAQ

What is the primary function of the AD9788-DPG2-EBZ?

The AD9788-DPG2-EBZ is an evaluation board for the AD9788 dual 16-bit, 800 MSPS DAC. It provides hardware and software infrastructure to evaluate the DAC's digital upconversion, complex NCO, I/Q calibration features, and analog output performance in real-world RF transmitter applications-including W-CDMA, LTE, and WiMAX signal generation.

Does the AD9788-DPG2-EBZ support multi-DAC synchronization?

Yes, the AD9788-DPG2-EBZ implements the AD9788's LVDS SYNC_I± and SYNC_O± interface to enable deterministic synchronization across multiple DACs. This allows precise phase alignment for transmit diversity and MIMO systems, with hardware-level timing control verified per AD9788's synchronization logic specifications.

Can the AD9788-DPG2-EBZ be used with FPGAs operating at 200 MSPS input data rates?

Yes-the AD9788-DPG2-EBZ supports the AD9788's maximum 200 MSPS input rate in 4× interpolation mode (DVDD18 = 1.9 V). Its CMOS data interface includes adjustable setup/hold timing and on-board DATACLK output, enabling robust FPGA-to-DAC data transfer validated per Table 2 timing requirements in the AD9788 datasheet.

What software tools are provided with the AD9788-DPG2-EBZ?

The AD9788-DPG2-EBZ ships with Analog Devices' ACE (Analysis, Control, Evaluation) software, which provides GUI-based SPI register configuration, real-time waveform capture, NCO tuning, interpolation mode selection, and I/Q calibration controls-all targeting the AD9788's full feature set as defined in its Rev. C datasheet.

Is the AD9788-DPG2-EBZ compatible with the ADL5375 quadrature modulator?

Yes-the AD9788-DPG2-EBZ analog output stage is optimized for seamless interface with ADL5375-family IQ modulators. Its differential current outputs (OUT1_P/N, OUT2_P/N) match the ADL5375's 25–50 Ω input impedance range, and its onboard biasing and termination networks align with ADL5375's recommended drive conditions per its datasheet.