AD9258

14-Bit, 125 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
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Product Details

The AD9258 is a dual, 14-bit, 80 MSPS/105 MSPS/125 MSPS analog-to-digital converter (ADC). The AD9258 is designed to support communications applications where high performance, combined with low cost, small size, and versatility, is desired.

The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each 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 design considerations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.

The ADC output data can be routed directly to the two external 14-bit output ports. These outputs can be set to either 1.8 V CMOS or LVDS.

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 AD9258 is available in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

Product Highlights

  1. On-chip dither option for improved SFDR performance with low power analog input.
  2. Proprietary differential input that maintains excellent SNR performance for input frequencies up to 300 MHz.
  3. Operation from a single 1.8 V supply and a separate digital output driver supply accommodating 1.8 V CMOS or LVDS outputs.
  4. Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock DCS, power-down, test modes, and voltage reference mode.
  5. Pin compatibility with the AD9268, allowing a simple migration from 14 bits to 16 bits. The AD9258 is also pin compatible with the AD9251, AD9231, and AD9204 family of products for lower sample rate, low power applications.


Applications

  • Communications
  • Diversity radio systems
  • Multimode digital receivers (3G)
      GSM, EDGE, W-CDMA, LTE,
     CDMA2000, WiMAX, TD-SCDMA
  • I/Q demodulation systems
  • Smart antenna systems
  • General-purpose software radios
  • Broadband data applications
  • Ultrasound Equipment

Product Lifecycle

checked Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Documentation

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Tools & Simulations

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VisualAnalog

Reference Designs

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CN0140 Circuit Diagram

Product Recommendations

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AD9258 Companion parts

Recommended Clock Drivers

Recommended Driver Amplifiers

Recommended IF Digital Variable Gain Amplifier

  • For a fully differential input and output DVGA in digital communications systems , we recommend the ADL5202 or the AD8376 .
  • For a dual channel VGA with programmable low pass filters , we recommend the ADRF6516 .

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.

AD9258 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Sample & Buy

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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.