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Analog Devices Inc. releases 2-GSPS data converter

Analog Devices, Inc. announced the immediate availability of the 12-bit, 2-GSPS, AD9625 A/D converter. It provides the best noise and dynamic range performance in its class for better receiver sensitivity along with the ability to discern smaller signals in the presence of noise, clutter, blockers and interferers. This breakthrough performance combined with 2GSPS bandwidth and integrated signal processing functionality enables the trend to direct RF sampling in communications, instrumentation and military/aerospace applications. The converter’s superior noise spectral density of 149.5 dBFS/Hz, coupled with high-input bandwidth, allow designers to use undersampling system architectures into the 2nd Nyquist zone, saving on a frequency down-conversion stage.

The AD9625 is the latest addition to ADI's wideband RF data acquisition technology portfolio that provides previously unavailable dynamic performance for better signal extraction in congested RF environments over a wider bandwidth than ever before. The AD9625 is interoperable with FPGAs from major manufacturers and supported with known good configurations. The AD9625, combined with the recently announced the 14-bit, 1-GSPS AD9680 A/D converter, demonstrate ADI’s innovation in providing leading edge offerings driving the trend toward direct RF sampling.

“In high-speed conversion, sampling rate is important, but it isn't the only thing we consider in our designs—and it isn’t always the most important figure of merit,” said John Forinash, engineering vice president, Integrated Solutions, Rincon Research Corporation, a leading provider of advanced digital signal processing solutions and technologies to the government. “Wide analog input bandwidth, improved dynamic range, and noise power ratio performance are also important considerations as we enable systems to collect and process a wider swath of RF signal bandwidth. The AD9625 is the next-generation 2+ GSPS A/D converter that combines the superior wideband dynamic performance and integrated functionality that we need to achieve our desired RF sampling architecture.”

ADI's AD9625 A/D converter’s wider input bandwidth enables advanced RF sampling architectures and allows designer to reduce the number of analog frequency down-conversion stages and their associated noise and cost contributions. The simplified system architecture eliminates the need to interleave multiple A/D converters to obtain needed performance and allows for development of reconfigurable platforms. It is available with an evaluation board design environment and reference designs to simplify system prototyping and board-level design and layout.

About the AD9625: Two Wideband Digital-Down Converters and JESD204B Outputs

The AD9625 achieves 80-dBc spurious-free dynamic range (SFDR) with a 1-GHz input, permitting designers to improve measurement accuracy and achieve more dynamic range than any comparable converter on the market today. The AD9625 is the only open-market-available 12-bit, 2-GSPS, A/D converter that simplifies the digital interfacing challenge by integrating two digital-down converters (DDC), two numerically controlled oscillators (NCO) and a configurable JESD204B serial link for the output data. These industry firsts improve usability and functionality by reducing output data rate requirements and simplifying board-level design and layout. Key applications include ultra-wideband RADAR, wideband front-ends for digital storage oscilloscopes and data acquisition platforms.

AD9625 Key Features

  • Direct RF sampling, including L-band digitizer
  • 80-dBc SFDR in high-input bandwidth applications.
  • On-chip reference and flexible JESD204B digital data outputs.

Evaluation Board Environment to Speed Prototyping and Design

Each GSPS A/D converter is supported by an evaluation board with a FPGA Mezzanine Card (FMC) connector, software, tools, SPI controller and reference designs. ADI’s VisualAnalog™ software package combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface allowing designers to customize their input signal and data analysis. The high-speed A/D converter SPI controller tool allows users to control advanced features with SPI capability. A data capture card is required for prototyping.

Pricing and Availability









Speed Grades




Price Each Per 1K






















12mm X 12mm

Evaluation Board












$750 per






Data Capture Card












$1155 per























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