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ADG794:  Low Voltage, 300 MHz Quad 2:1 Mux Analog HDTV Audio/Video Switch

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


  • Bandwidth: 300 MHz
  • Low Insertion Loss and on Resistance: 5 Ω typical
  • On Resistance Flatness: 0.68 Ω Typical
  • Single 3 V/5 V Supply Operation
  • Low Quiescent Supply Current: 1 nA Typical
  • TTL/CMOS Compatible
  • Fast switching times:
    tON, 7 ns
    tOFF, 5 ns
  • ESD protection
    2 kV human body model (HBM)
    200 V machine model (MM)
    1 kV field-induced charged device model (FICDM)

Functional Block Diagram for ADG794

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADG794 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADG794BRQZ Status: Production 16 ld QSOP 16 Ind Tube, 98 $0.68 $0.56 Y  Material Info PCN Purchase Sample
ADG794BRQZ-500RL7 Status: Production 16 ld QSOP 16 Ind Reel, 500 - $0.56 Y  Material Info PCN Purchase
ADG794BRQZ-REEL Status: Production 16 ld QSOP 16 Ind Reel, 2500 - $0.56 Y  Material Info PCN Purchase
ADG794BRQZ-REEL7 Status: Production 16 ld QSOP 16 Ind Reel, 1000 - $0.56 Y  Material Info PCN Purchase
Price Table Help

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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