Analog Devices Inc. AD9689-2600EBZ

Overview

AD9689-2600EBZ from Analog Devices is a high-speed evaluation board for the AD9689 - a 14-bit, 2.6 GSPS dual analog-to-digital converter with JESD204B subclass 1 interface, supporting up to eight lanes at 12.5 Gbps per lane, and designed for wideband RF sampling in radar and communications infrastructure.

For engineers reviewing the AD9689-2600EBZ datasheet, AD9689-2600EBZ pinout, AD9689-2600EBZ application, or AD9689-2600EBZ equivalent, this board enables rapid validation of JESD204B deterministic latency alignment, SYSREF timing integrity, FPGA link initialization, and high-fidelity ADC performance at 2.6 GSPS under real-world clocking and signal conditioning constraints.

Technical Context

The AD9689-2600EBZ implements the full reference design for the AD9689 ADC, including ultra-low-jitter clock distribution (using HMC7044), matched-length differential trace routing for all eight JESD204B lanes and SYSREF, and calibrated DC-coupled analog input paths optimized for 1.5 GHz bandwidth. It supports both single-ended and differential analog input configurations via on-board SMA connectors and transformer-based front-end options.

Board-level synchronization relies on precise SYSREF propagation across FPGA, ADC, and clock generator - implemented with controlled-delay transmission lines and programmable delay elements - enabling deterministic latency compliance per JESD204B Subclass 1 requirements. The board interfaces directly with Xilinx Kintex Ultrascale+ and Virtex Ultrascale+ FPGAs via Samtec QSH/QTH connectors.

Key Specifications

Availability

AD9689-2600EBZ is available at Aetrix Electronics and suitable for phased-array radar development, 5G massive MIMO baseband verification, wideband spectrum monitoring, and high-speed data acquisition systems requiring stable component supply and full JESD204B link validation capability.

Supply support for AD9689-2600EBZ 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 technologies, serving aerospace, communications, industrial, and medical markets with precision data conversion and RF solutions.

The AD9689-2600EBZ belongs to Analog Devices' High-Speed Converter Evaluation Platform family, engineered specifically to accelerate time-to-validation for JESD204B-compliant RF-sampling ADCs in demanding wireless infrastructure and defense electronics applications.

FAQ

What is the primary function of the AD9689-2600EBZ evaluation board?

The AD9689-2600EBZ evaluation board is a fully configured hardware platform for evaluating the AD9689 14-bit, 2.6 GSPS dual ADC. It provides complete signal chain implementation - including clock generation, analog input conditioning, JESD204B lane routing, and FPGA interfacing - enabling engineers to validate dynamic performance, deterministic latency, and link reliability without custom PCB development. The AD9689-2600EBZ supports both lab bench characterization and integration into larger system prototypes.

Does the AD9689-2600EBZ support JESD204B Subclass 1 operation?

Yes, the AD9689-2600EBZ is explicitly designed to demonstrate JESD204B Subclass 1 operation with the AD9689. It includes a synchronized SYSREF distribution network with adjustable delay, matched-length traces to ADC and FPGA, and firmware-ready timing control - all verified to achieve deterministic latency across power cycles and link resynchronizations. The AD9689-2600EBZ documentation confirms Subclass 1 compliance through measured lane alignment and multiframe clock alignment tests.

Which FPGAs are compatible with the AD9689-2600EBZ?

The AD9689-2600EBZ is natively supported by Xilinx Kintex Ultrascale+ and Virtex Ultrascale+ FPGAs via its Samtec QSH/QTH high-speed mezzanine interface. Reference designs and HDL IP cores are provided by Analog Devices for these families. While other FPGAs may be physically connectable, only Xilinx Ultrascale+ devices have validated JESD204B PHY and link layer support for the full 8-lane, 12.5 Gbps configuration used by the AD9689-2600EBZ.

Can the AD9689-2600EBZ operate with single-ended analog inputs?

Yes, the AD9689-2600EBZ supports both differential and single-ended analog input configurations. It features dual SMA input connectors with onboard switch-selectable termination and transformer bypass paths. When configured for single-ended operation, the board routes signals through DC-coupled amplifiers and level-shifting circuitry to meet the AD9689's input common-mode voltage requirements. This flexibility allows the AD9689-2600EBZ to interface directly with function generators or legacy test equipment without external baluns.

What clock sources are supported on the AD9689-2600EBZ?

The AD9689-2600EBZ supports multiple clock source configurations: an onboard HMC7044 ultra-low-jitter clock generator (programmable from 245.76 MHz to 3.1 GHz), external SMA-referenced clock input, and FPGA-generated clock feedback. All paths include phase noise optimization, impedance-matched routing, and independent power filtering. The AD9689-2600EBZ's clock architecture ensures sub-100 fs integrated jitter (12 kHz–20 MHz) at the AD9689 sampling clock input, critical for maintaining ENOB above 11.5 bits at 2.6 GSPS.