14-Bit, 80 MSPS/155 MSPS, 1.8 V Serial Output Analog-to-Digital Converter (ADC)

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Product Details

The AD9641 is a 14-bit, 80 MSPS/155 MSPS analog-to-digital converter (ADC) with a high speed serial output interface. The AD9641 is designed to support communications applications where high performance, combined with low cost, small size, and versatility, is desired. The JESD204A high speed serial interface reduces board routing requirements and lowers pin count requirements for the receiving device.

The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. The ADC features wide bandwidth, differential sample-and-hold, analog input amplifiers that support a variety of user-selectable input ranges. An integrated voltage reference eases the design considerations. A duty cycle stabilizer (DCS) is provided to compensate for variations in the ADC clock duty cycle, allowing the converter to maintain excellent performance.

The ADC output data is routed directly to the JESD204A serial output port. This output is at CML voltage levels. A CMOS or LVDS synchronization input (DSYNC) is provided.

The flexible power-down options allow significant power savings, when desired.

Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.

The AD9641 is available in a 32-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

  • Communications
  • Diversity radio systems
  • Multimode digital receivers (3G and 4G)
  • Smart antenna systems
  • General-purpose software radios
  • Broadband data applications
  • Ultrasound equipment

Product Highlights
  1. An on-chip PLL allows users to provide a single ADC sampling clock. The PLL multiplies the ADC sampling clock to produce the corresponding JESD204A data rate clock.
  2. The configurable JESD204A output block coded data rate supports up to 1.6 Gbps.
  3. A proprietary differential input maintains excellent SNR performance for input frequencies up to 250 MHz.
  4. Operation is from a single 1.8 V power supply.
  5. The standard serial port interface (SPI) supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), controlling the clock DCS, power-down, test modes, voltage reference mode, and serial output configuration.

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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Product Details

This page contains evaluation board documentation and ordering information for evaluating the AD9641.


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Tools & Simulations

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Virtual Eval - BETA

Virtual Eval is a web application to assist designers in product evaluation of ADCs and DACs. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, frequency response plots, and more.


Design Tools

Product Recommendations

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AD9641 Companion parts

Recommended Clock Drivers

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  • For an independent, dual channel, digitally controlled VGA , we recommend the AD8370 .
  • For an ultralow distortion, IF dual channel VGA , we recommend the AD8375 .

Reference Materials

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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.

AD9641 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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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.