Low Voltage, 300 MHz Quad 2:1 Mux Analog HDTV Audio/Video Switch

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Product Details

The ADG794 is a monolithic CMOS device comprising four 2:1 multiplexer/demultiplexers with high impedance outputs. The CMOS process provides low power dissipation yet gives high switching speed and low on resistance. The on resistance variation is typically less than 1.2 Ω over the input signal range.

The bandwidth of the ADG794 is typically 300 MHz and this, coupled with low distortion (typically 0.68%), makes the part suitable for switching analog audio/video signals.

The ADG794 operates from a single 3.3 V/5 V supply and is TTL logic compatible. The switches are controlled by the logic inputs IN and EN as shown in Table 4. The EN pin allows the user to disable all switches.

These switches conduct equally well in both directions when on. In the off condition, signal levels up to the supplies are blocked. The ADG794 switches exhibit break-before-make switching action.

The ADG794 is available in a 16-pin QSOP package.

Product Highlights

  1. Wide bandwidth: 300 MHz.
  2. Ultralow power dissipation.
  3. Crosstalk: −70 dB (typical) at 10 MHz.
  4. Off isolation: −65 dB (typical) at 10 MHz.
  5. ESD protection tested as per ESD Association Standards:
    2 kV HBM (ANSI/ESD STM5.1-2001)
    200 V MM (ANSI/ESD STM5.2-1999)
    1 kV FICDM (ANSI/ESD STM5.3.1-1999)


  • RGB switches
  • HDTV
  • DVD-R
  • Audio/video switches

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.

Reference Designs


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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.

ADG794 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints


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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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