AD9656:  Quad, 16-Bit, 125 MSPS JESD204B 1.8 V Analog-to-Digital Converter

Product Details

Product Status:Recommended for New Designs

For more information on JESD204 go to

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


  • SNR = 79.9 dBFS at 16 MHz (VREF = 1.4 V)
  • SNR = 78.1 dBFS at 64 MHz
    (VREF = 1.4 V)
  • SFDR = 86 dBc to Nyquist
    (VREF = 1.4 V)
  • JESD204B Subclass 1 coded serial digital outputs
  • Flexible analog input range
    2.0 V p-p to 2.8 V p-p
  • 1.8 V supply operation
  • Low power: 197 mW per channel at 125 MSPS (two lanes)
  • DNL = ±0.6 LSB (VREF = 1.4 V)
    INL = ±4.5 LSB (VREF = 1.4 V)
  • 650 MHz analog input bandwidth, full power
  • Serial port control
    Full chip and individual channel power-down modes
    Built-in and custom digital test pattern generation
    Multichip sync and clock divider
    Standby mode

Functional Block Diagram for AD9656



Title Content Type File Type
AD9656: Quad, 16-Bit, 125 MSPS, JESD204B 1.8 V Analog-to-Digital Converter Data Sheet (Rev 0, 01/2014) (pdf, 1000 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD9656 Input Impedance  (xlsx, 432 kB) Design Assistants XLSX

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended Driver Amplifiers for the AD9656
  • For RF/IF applications requiring low noise and low distortion, we recommend the ADL5565 differential amplifier.
  • For baseband applications requiring ultra low noise, low distortion, low power, we recommend the ADA4930-1 differential amplifier.
  • For a high speed, low power, FET input, we recommend the AD822 dual op amp.
Recommended Clock Driver for the AD9656
  • For a low jitter, low phase noise, clock fan-out buffer, we recommend the AD9508.
Recommended Power Devices for the AD9656
  • 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 Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9656 Model Options
Price Table Help

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.

AD9656 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD9656EBZ Status: Production Evaluation Board $395.00 Yes -

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.

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