Analog Devices Inc. AD9634-250EBZ

Overview

AD9634-250EBZ from Analog Devices is a high-speed 12-bit analog-to-digital converter evaluation board designed for the AD9634-250, a dual-channel, 250 MSPS ADC with JESD204B serial interface. It supports full-speed data capture via the HSC-ADC-EVALCZ FPGA-based capture board, features on-board clock conditioning, and enables SNR, SFDR, and ENOB validation at 250 MSPS under real-world signal chain conditions.

For engineers reviewing the AD9634-250EBZ datasheet, AD9634-250EBZ pinout, AD9634-250EBZ application, or AD9634-250EBZ equivalent, this evaluation platform provides validated signal integrity, SPI-configurable ADC register settings, JESD204B lane alignment verification, and direct VisualAnalog/SPICtrl software integration for rapid high-speed ADC characterization.

Technical Context

The AD9634-250EBZ implements a complete test-ready signal chain for the AD9634-250 IC, including transformer-coupled 50 Ω analog inputs (J301/J302), ultra-low-jitter clock distribution to J506, and configurable power sequencing via jumpers P104–P110. It interfaces exclusively with the HSC-ADC-EVALCZ capture board using a standardized 120-pin interconnect and requires 2.5 V FPGA I/O voltage set via J9.

Board-level design supports dual-channel simultaneous sampling, accepts input clock levels of 10–14 dBm, and enables analog input signal levels of 8–12 dBm through shielded RG-58 coaxial cabling. Firmware configuration uses AD9634_12Bit_205MSspiR03.cfg or variant SPI files, with FPGA programming verified by the 'DONE' LED on the capture board.

Key Specifications

Availability

AD9634-250EBZ is available at Aetrix Electronics and suitable for high-speed data acquisition systems, radar front-end prototyping, and communications test equipment requiring stable component supply and validated ADC evaluation infrastructure.

Supply support for AD9634-250EBZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision and high-speed applications.

The AD9634-250EBZ belongs to Analog Devices' high-speed ADC evaluation platform family, engineered specifically to accelerate time-to-validation for JESD204B-compliant RF-sampling converters in defense, instrumentation, and wireless infrastructure.

FAQ

What is the primary function of the AD9634-250EBZ?

The AD9634-250EBZ is an evaluation board designed exclusively for the AD9634-250 dual-channel 12-bit 250 MSPS ADC. It provides a complete, calibrated hardware environment-including analog input conditioning, clock distribution, and JESD204B interface routing-to enable accurate performance validation of the AD9634-250 in real system conditions without custom PCB development.

Which capture board is required to operate the AD9634-250EBZ?

The AD9634-250EBZ must be used with the HSC-ADC-EVALCZ FPGA-based data capture board. They connect via a standardized 120-pin interconnect, and the HSC-ADC-EVALCZ provides JESD204B lane alignment, FIFO buffering, USB 2.0 host interface, and FPGA-programmable ADC control logic essential for full-speed operation of the AD9634-250EBZ.

Does the AD9634-250EBZ support single-ended or differential analog inputs?

The AD9634-250EBZ supports single-ended analog inputs via SMA connectors J301 (Channel A) and J302 (Channel B), each routed through a 1:1 balun to match the AD9634-250's internal differential input architecture. The board does not provide native differential drive capability but relies on external baluns or transformers for proper signal conversion prior to connection.

What clock signal specifications are required for the AD9634-250EBZ?

The AD9634-250EBZ requires a clean, low-phase-noise sine wave input at SMA connector J506, with power level between 10 dBm and 14 dBm. This clock drives the AD9634-250's sampling core directly or feeds its internal programmable clock divider to achieve the target 250 MSPS conversion rate.

Is the AD9634-250EBZ compatible with other AD96xx-series evaluation boards?

No - the AD9634-250EBZ is mechanically and electrically specific to the AD9634-250 and is not interchangeable with other AD96xx evaluation boards. Its layout, jumper configurations (e.g., P104–P110), clock routing, and JESD204B lane mapping are optimized solely for the AD9634-250's pinout, timing, and register map, and do not support drop-in substitution with AD9643, AD9680, or similar devices.