Analog Devices Inc. AD9695-625EBZ

Overview

AD9695-625EBZ from Analog Devices is a dual-channel, 14-bit, 625 MSPS analog-to-digital converter evaluation board supporting JESD204B Subclass 1 serial interface with up to 4 lanes and 16 Gbps lane rate. It integrates two ADC cores, four digital downconverters (DDCs), and on-chip voltage reference, targeting wideband communications receivers requiring high channel isolation (>95 dB), low noise density (−153.5 dBFS/Hz), and 2 GHz full-power analog input bandwidth.

For engineers reviewing the AD9695-625EBZ datasheet, AD9695-625EBZ pinout, AD9695-625EBZ application, or AD9695-625EBZ equivalent, this page delivers verified specifications, functional context, supply support, and design-critical alternatives for RF sampling systems in 5G infrastructure, spectrum analyzers, and radar front ends.

Technical Context

The AD9695-625EBZ implements a dual pipelined ADC architecture with buffered differential inputs, 48-bit numerically controlled oscillators (NCOs), and programmable decimation filters per channel. Each ADC supports independent input ranges (1.36–2.04 V p-p) and operates from 0.95 V, 1.8 V, and 2.5 V supplies.

JESD204B Subclass 1 link configuration enables deterministic latency synchronization via SYSREF± and SYNCINB± pins. Fast detect outputs (FD_A/FD_B) provide sub-26-cycle overrange indication for AGC loop control, while integrated signal monitoring supports real-time digitized signal analysis without external logic.

Key Specifications

Availability

AD9695-625EBZ is available at Aetrix Electronics and suitable for 5G massive MIMO base stations, broadband test instrumentation, and defense radar signal acquisition requiring stable component supply, traceable sourcing, and long-term lifecycle continuity.

Supply support for AD9695-625EBZ 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, headquartered in Norwood, MA.

The AD9695 product line delivers high-speed, high-fidelity data conversion for demanding RF and communications applications, emphasizing wide input bandwidth, low power, and JESD204B interoperability in compact LFCSP packages.

FAQ

What is the primary function of the AD9695-625EBZ?

The AD9695-625EBZ is an evaluation board for the AD9695-625 dual 14-bit, 625 MSPS analog-to-digital converter. It provides a complete hardware platform-including clock conditioning, power regulation, JESD204B lane routing, and SPI interface-to validate the performance and integration of the AD9695-625 IC in wideband receiver designs. The board enables rapid prototyping of systems requiring deterministic latency, high channel isolation, and flexible DDC configuration.

Does the AD9695-625EBZ support both JESD204B Subclass 0 and Subclass 1?

No. The AD9695-625EBZ supports only JESD204B Subclass 1 operation, as confirmed by the AD9695 datasheet Rev. C and board documentation. Subclass 1 enables deterministic latency through SYSREF± synchronization, which is essential for multichip timing alignment in phased-array radars and massive MIMO systems. Subclass 0 is not implemented or validated for the AD9695-625EBZ.

What are the supported analog input voltage ranges on the AD9695-625EBZ?

The AD9695-625EBZ supports three configurable analog input full-scale ranges: 1.36 V p-p, 1.7 V p-p (typical for 625 MSPS mode), and 2.04 V p-p. These ranges are user-selectable via SPI register settings and correspond directly to the AD9695-625 IC's internal calibration and gain control. The board's input network is optimized for differential 50 Ω termination across the 2 GHz bandwidth.

Can the AD9695-625EBZ operate without an external clock source?

No. The AD9695-625EBZ requires an external differential clock applied to the CLK+/CLK− inputs, compliant with LVDS or LVPECL standards (400–1600 mV p-p). It does not include an on-board crystal oscillator or PLL clock generator. Clock distribution must be provided externally, and the board supports integer divide-by-2 and divide-by-4 modes via SPI configuration to accommodate lower-frequency clock sources.

How is multidevice synchronization achieved using the AD9695-625EBZ?

Multidevice synchronization on the AD9695-625EBZ is achieved via dedicated SYSREF± and SYNCINB± differential inputs, which align JESD204B link startup and frame boundaries across multiple AD9695 devices. The board routes these signals with matched trace lengths and proper termination to maintain sub-picosecond skew-critical for coherent beamforming and time-interleaved sampling architectures.