Features and Benefits

  • DNL = ±0.35 LSB
  • INL = ±0.26 LSB
  • Single 3.3 V supply operation (3.0 V to 3.6 V)
  • Power dissipation of 439 mW at 250 MSPS
  • 1 V p-p analog input range
  • Internal 1.0 V reference
  • Single-ended or differential analog inputs
  • De-multiplexed CMOS outputs
  • Power-down mode
  • Clock duty cycle stabilizer

Product Details

The AD9481 is an 8-bit, monolithic analog-to-digital converter (ADC) optimized for high speed and low power consumption. Small in size and easy to use, the product operates at a 250 MSPS conversion rate, with excellent linearity and dynamic performance over its full operating range.

To minimize system cost and power dissipation, the AD9481 includes an internal reference and track-and-hold circuit. The user only provides a 3.3 V power supply and a differential encode clock. No external reference or driver components are required for many applications.

The digital outputs are TTL/CMOS-compatible with an option of twos complement or binary output format. The output data bits are provided in an interleaved fashion along with output clocks that simplifies data capture.

The AD9481 is available in a Pb-free, 44-lead, surface-mount package (TQFP-44) specified over the industrial temperature range (−40°C to +85°C).

Product Highlights

  1. Superior linearity. A DNL of ±0.35 makes the AD9481 suitable for many instrumentation and measurement applications
  2. Power-down mode. A power-down function may be exercised to bring total consumption down to 15 mW.
  3. De-multiplexed CMOS outputs allow for easy interfacing with low cost FPGAs and standard logic.


  • Digital oscilloscopes
  • Instrumentation and measurement
  • Communications:
    Point-to-point radios
    Digital predistortion loops

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)

Tools & Simulations

IBIS Models

AD9481 IBIS Models

Design Tools

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.

Design Resources

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.

PCN-PDN Information

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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.