Analog Devices Inc. AD9706-DPG2-EBZ

Overview

AD9706-DPG2-EBZ from Analog Devices is an evaluation board designed for the AD9706 12-bit, 175 MSPS TxDAC® digital-to-analog converter. It integrates a PIC18F4550 USB interface controller, AD9512 clock conditioner, and RF transformer-based IOUT_A differential-to-single-ended output stage. The board supports real-time waveform generation via DPG2 pattern generator and enables spectral analysis of DAC output up to 175 MHz sampling rate in RF and communications test setups.

For engineers reviewing the AD9706-DPG2-EBZ datasheet, AD9706-DPG2-EBZ pinout, AD9706-DPG2-EBZ application, or AD9706-DPG2-EBZ equivalent, this page provides verified hardware configuration details, supported clocking architecture, DPG2 integration requirements, USB-powered operation, and DAC-specific evaluation workflows including SPI register control, self-calibration activation, and single-tone spectral validation.

Technical Context

The AD9706-DPG2-EBZ implements a complete signal chain for evaluating high-speed DAC performance: it accepts 175 MHz LVCMOS clock input at J10, conditions it via AD9512 to generate differential CLK+/CLK− for the AD9706, and routes parallel 12-bit data from DPG2 through level-shifted LVCMOS 3.3 V interfaces. On-board PIC18F4550 handles USB-to-SPI translation and power management functions including clock-off, sleep, and external reference selection.

Evaluation firmware supports register-level access to all AD9706 control bits (e.g., power-down, calibration enable, current full-scale setting), while analog output at S4 delivers 50 Ω-terminated single-ended signals derived from IOUT_A with measured SFDR >70 dBc at 20 MHz tone under 175 MSPS operation per Quick Start Guide Figure 2.

Key Specifications

Availability

AD9706-DPG2-EBZ is available at Aetrix Electronics and suitable for RF transceiver validation, high-speed DAC characterization, and wireless baseband prototyping requiring stable component supply, traceable evaluation hardware, and documented DPG2 integration support.

Supply support for AD9706-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.

The AD9706-DPG2-EBZ belongs to Analog Devices' TxDAC® evaluation platform family, engineered to accelerate RF DAC validation in communications infrastructure, radar, and instrumentation applications where spectral purity, timing fidelity, and rapid waveform iteration are critical.

FAQ

What is the primary function of the AD9706-DPG2-EBZ?

The AD9706-DPG2-EBZ is a dedicated evaluation board for the AD9706 12-bit, 175 MSPS TxDAC®. It provides full hardware and software infrastructure-including USB-controlled SPI interface, AD9512 clock conditioning, DPG2 pattern injection, and RF-transformer-based output-to validate DAC dynamic performance, calibration behavior, and system-level integration without custom PCB design. AD9706-DPG2-EBZ enables immediate spectral analysis and register-level control out-of-box.

Does the AD9706-DPG2-EBZ support other DACs like AD9707 or AD9705?

No. Although the board shares mechanical and layout heritage with AD9707/AD9705/AD9704-EBZ variants, the AD9706-DPG2-EBZ is electrically configured and validated exclusively for the AD9706. Its firmware, clock tree tuning, and register map alignment are specific to AD9706's 12-bit resolution, current output range, and calibration sequence-using it with AD9707 (14-bit) or AD9705 (10-bit) is not supported per Analog Devices documentation.

What clock source requirements apply to the AD9706-DPG2-EBZ?

The AD9706-DPG2-EBZ requires a 175 MHz sinusoidal clock input at J10 with +3 dBm amplitude and 50 Ω termination. This signal feeds the AD9512 clock chip, which generates clean differential CLK+/CLK− for the AD9706. Deviations from 175 MHz or use of square-wave clocks degrade jitter performance and violate the board's validated operating point as confirmed in the Quick Start Guide.

How is data delivered to the AD9706 on the AD9706-DPG2-EBZ?

Data is delivered via parallel 12-bit LVCMOS 3.3 V interface from the DPG2 pattern generator-not over SPI. The DPG2 drives the AD9706's data bus directly using DCO-synchronized timing; SPI is reserved solely for control register access through the onboard PIC18F4550. This separation ensures deterministic data throughput matching the 175 MSPS sample rate, as verified in the "Quick Start Procedure" section.

Can the AD9706-DPG2-EBZ operate without the DPG2 hardware?

Yes, but with limited functionality. The AD9706-DPG2-EBZ can be operated in PIN mode (via JP11) using static logic patterns or low-speed pattern generators; however, full 175 MSPS waveform generation, spectral analysis, and DPG2-specific features (e.g., LTE/WiMAX waveforms) require the DPG2 hardware and its companion software. Without DPG2, users rely on manual register writes and external signal sources for stimulus.