Features and Benefits

  • Integrated Dual 14-Bit Analog-to-Digital Converters
  • Single 3 V Supply Operation (2.7 V to 3.6 V)
  • SNR = 71.6 dBc (to Nyquist, AD9248-65)
  • SFDR = 80 dBc (to Nyquist, AD9248-65)
  • Low Power: 300 mW at 65 MSPS
  • Differential Input with 500 MHz 3 dB Bandwidth
  • Exceptional Cross Talk Immunity > 85 dB
  • On-Chip Reference and SHA
  • Flexible Analog Input: 1 Vp-p to 2 Vp-p Range
  • Offset Binary or Twos Complement Data Format
  • Clock Duty Cycle Stabilizer
  • Output datamux option

Product Details

The AD9248 is a dual, 3 V, 14-bit, 20/40/65 MSPS analog to digital converter. It features dual high performance sample-and-hold amplifiers and an integrated voltage reference. The AD9248 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy and guarantee no missing codes over the full operating temperature range at up to 65 MSPS data rates.

The wide bandwidth, differential SHA allows for a variety of user-selectable input ranges and offsets including single-ended applications. It is suitable for various applications including multiplexed systems that switch full-scale voltage levels in successive channels and for sampling inputs at frequencies well beyond the Nyquist rate. The AD9248 is suitable for applications in communications, imaging and medical ultrasound.

Dual single-ended independent clock inputs are used to control all internal conversion cycles. A Duty Cycle Stabilizer (DCS) is available on the AD9248-65 and can compensate for wide variations in the clock duty cycle, allowing the converters to maintain excellent performance. The digital output data is presented in either straight binary or twos complement format. Out-of-range signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9248 is available in a space saving 64-pin LQFP and is pin compatible to the AD9238. It is specified over the industrial temperature range (-40°C to +85°C).


  • Ultrasound equipment
  • Direct conversion or IF sampling receivers
  • Battery-powered instruments
  • Hand-held scopemeters
  • Low cost digital oscilloscopes

Product Lifecycle icon-recommended 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.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (2)
  • Application Notes (16)
  • Circuit Note (1)
  • Technical Articles (4)
  • Application Notes

    Tools & Simulations

    Virtual Eval - BETA

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    Visual Analog

    For designers who are selecting or evaluating high speed ADCs, VisualAnalog™ is a software package that combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface.


    ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

    Reference Designs (1)

    Product Recommendations

    AD9248 Companion Parts

    Recommended ADC Drivers

    Recommended Clock Drivers

    Recommended External Reference

    • For improved thermal drift and gain accuracy: ADR130.

    Design Resources

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