Analog Devices Inc. AD9644-80KITZ

Overview

AD9644-80KITZ from Analog Devices is a dedicated evaluation board for the AD9644 dual-channel, 14-bit, 80 MSPS analog-to-digital converter (ADC), featuring JESD204A serial output, configurable clocking (external, on-board oscillator, or AD9524-based), and dual-path analog input options with balun/transformer or optional AD8376 VGA support.

For engineers reviewing the AD9644-80KITZ datasheet, AD9644-80KITZ pinout, AD9644-80KITZ application, or AD9644-80KITZ equivalent, this board enables rapid validation of high-speed ADC performance in RF receiver, communications infrastructure, and instrumentation systems - with VisualAnalog® and SPI Controller software integration, FPGA-based data capture via FIFO-GX, and flexible power supply configurations (LDO or ADP2114 switching).

Technical Context

The AD9644-80KITZ implements full hardware support for the AD9644's dual 14-bit channels operating at up to 80 MSPS, with JESD204A interface compliance (M=1/L=1/S=1/F=2/N'=16 in default Output Configuration A). It provides three clocking paths: transformer-coupled external LVPECL, on-board Valpey Fisher oscillator (Y502), or AD9524 programmable clock generator with VCXO.

Analog input is configurable for double-balun-coupled 50 Ω differential drive (10 dBm nominal, 2 V p-p full scale) or active path using AD8376 VGA (enabled per channel via P401/P402 jumpers). Power delivery supports both LDO-regulated rails and ADP2114 dual switching regulator configuration for improved efficiency.

Key Specifications

Availability

AD9644-80KITZ is available at Aetrix Electronics and suitable for RF receiver design, wireless infrastructure prototyping, and test & measurement equipment development requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for AD9644-80KITZ 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 Wilmington, MA, with deep expertise in precision data conversion and RF technologies.

The AD9644-80KITZ belongs to Analog Devices' high-speed ADC evaluation platform family, designed specifically to accelerate development of wideband receivers, communications base stations, and instrumentation systems leveraging JESD204A interface and low-jitter sampling architectures.

FAQ

What is the primary function of the AD9644-80KITZ?

The AD9644-80KITZ is an evaluation board engineered exclusively for the AD9644 dual-channel, 14-bit, 80 MSPS analog-to-digital converter. It provides complete signal chain support-including clocking, analog input conditioning, power regulation, JESD204A output interfacing, and software-controlled configuration-to enable accurate ac performance characterization and system-level integration validation of the AD9644 in real applications.

Which ADC models does the AD9644-80KITZ support?

The AD9644-80KITZ is specifically configured for the AD9644-80EBZ variant (dual-channel, 80 MSPS), as confirmed by UG-294 Rev. B documentation. While the same board family also supports AD9644-155KITZ and AD9641-80KITZ, the AD9644-80KITZ hardware layout, default jumper settings, and FPGA configuration files (e.g., ad9644_41.rbf) are optimized for the 80 MSPS AD9644 device and its dual-channel JESD204A output modes.

Does the AD9644-80KITZ include on-board clock generation?

Yes, the AD9644-80KITZ includes an on-board Valpey Fisher low-jitter clock oscillator (Y502) that can serve as the sampling clock source. Activation requires installing a jumper on header P501. This option eliminates dependency on external signal generators during preliminary evaluation, while maintaining phase noise performance suitable for high-SNR ADC testing.

How is analog input configured on the AD9644-80KITZ by default?

By default, the AD9644-80KITZ uses a double-balun-coupled analog input network optimized for 50 Ω differential drive across a wide frequency band, delivering 2 V p-p full-scale swing at 10 dBm nominal input power. Channel A and Channel B each feature identical passive front-end circuitry (including 33 Ω/36 Ω resistive matching and 8.2 pF AC coupling), as shown in Figure 3 of UG-294.

What software tools are required to operate the AD9644-80KITZ?

Operation of the AD9644-80KITZ requires two primary software tools: VisualAnalog® for FFT-based performance analysis and real-time data visualization, and the SPI Controller application for low-level register configuration of the AD9644 (e.g., clock divider, JESD204A link settings, input mode selection). Both tools are provided free by Analog Devices and integrate directly with the FIFO-GX FPGA capture platform.