Quad, 16-Bit, 125 MSPS JESD204B 1.8 V Analog-to-Digital Converter

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Product Details

The AD9656 is a quad, 16-bit, 125 MSPS analog-to-digital converter (ADC) with an on-chip sample-and-hold circuit designed for low cost, low power, small size, and ease of use. The product operates at a conversion rate of up to 125 MSPS and is optimized for outstanding dynamic performance and low power in applications where a small package size is critical.

The ADC requires a single 1.8 V power supply and LVPECL-/ CMOS-/LVDS-compatible sample rate clock for full performance operation. No external reference or driver components are required for many applications.

Individual-channel power-down is supported and typically consumes less than 2 mW when all channels are disabled. The ADC contains several features designed to maximize flexibility and minimize system cost, such as programmable output clock and data alignment and digital test pattern generation. The available digital test patterns include built-in deterministic and pseudorandom patterns, along with custom user-defined test patterns entered via the serial port interface (SPI).

The AD9656 is available in a RoHS-compliant, 56-lead LFCSP.

It is specified over the industrial temperature range of −40°C to +85°C.


  1. It has a small footprint. Four ADCs are contained in a small, 8 mm × 8 mm package.
  2. An on-chip phase-locked loop (PLL) allows users to providea single ADC sampling clock; the PLL multiplies the ADCsampling clock to produce the corresponding JESD204Bdata rate clock
  3. The configurable JESD204B output block supports up to 6.4
    Gbps per lane.
  4. JESD204B output block supports one, two, and four laneconfigurations.
  5. Low power of 198 mW per channel at 125 MSPS, two lanes.
  6. The SPI control offers a wide range of flexible features to
    meet specific system requirements..


  • Medical imaging
  • High speed imaging
  • Quadrature radio receivers
  • Diversity radio receivers
  • Portable test equipment

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits


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EVAL-AD9656 Circuit Diagram

Product Details

The AD9656EBZ is an evaluation board for the AD9656, quad 16-bit ADC. This reference design provides all of the support circuitry required to operate the devices in their various modes and configurations. It is designed to interface directly with the HSC-ADC-EVALEZ data capture card, allowing users to download captured data for analysis. The Visual Analog software package, which is used to interface with the device's hardware, allows users to download captured data for analysis with a user-friendly graphical interface. The SPI Controller software package is also compatible with this hardware, and allows the user to access the SPI programmable features of the AD9656.

The AD9656 data sheet provides additional information related to device configuration and performance, and should be consulted when using these tools. All documents and Visual Analog and SPI Controller are available at the High Speed ADC Evaluation Boards page. For additional information or questions, please email

Tools & Simulations

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Design Tools

Product Recommendations

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AD9656 Companion Parts

Recommended Driver Amplifiers

  • For a high speed, low power, FET input , we recommend the AD822 .
  • For RF/IF applications requiring low noise and low distortion , we recommend the ADL5565 .
  • For baseband applications requiring ultra low noise, low distortion, low power , we recommend the ADA4930-1 .

Recommended Power Devices

  • For a high efficiency, low quiescent current, DC- DC converter , we recommend the ADP2108 .
  • For a low dropout, CMOS linear regulator , we recommend the ADP1706 .

Recommended Clock Driver

  • For a low jitter, low phase noise, clock fan-out buffer , we recommend the AD9528 or the HMC7043 .

Reference Materials

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  • Informational

    JESD204 Serial Interface

    The JESD204 and the JESD204B revision data converter serial interface standard was created through the JEDEC...

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

AD9656 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints


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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.