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AD8118:  600 MHz, 32 × 32 Buffered Analog Crosspoint Switch

Product Details

The AD8117/AD8118 are high speed, 32 × 32 analog crosspoint switch matrices. They offer 600 MHz bandwidth and slew rate of 1800 V/μs for high resolution computer graphics (RGB) signal switching. With less than −70 dB of crosstalk and −90 dB isolation (@ 5 MHz), the AD8117/AD8118 are useful in many high speed applications. The 0.1 dB flatness greater than 50 MHz makes the AD8117/AD8118 ideal for composite video switching.

The AD8117/AD8118 include 32 independent output buffers that can be placed into a high impedance state for paralleling crosspoint outputs so that off-channels present minimal loading to an output bus. The AD8117 has a differential gain of +1, while the AD8118 has a differential gain of +2 for ease of use in back-terminated load applications. They operate as fully differential devices or can be configured for single-ended operation. Either a single +5 V supply or dual ±2.5 V supplies can be used, while consuming only 500 mA of idle current with all outputs enabled. The channel switching is performed via a double-buffered, serial digital control (which can accommodate daisy chaining of several devices), or via a parallel control, allowing updating of an individual output without reprogram-ming the entire array.

The AD8117/AD8118 are packaged in a 304-ball BGA package and are available over the extended industrial temperature range of −40°C to +85°C.


  • Routing of high speed signals including
  • RGB and component video routing
    Compressed video (MPEG, wavelet)
    Data communications


  • High channel count, 32 × 32 high speed, non-blocking switch array
  • Differential G = +1 (AD8117) or G = +2 (AD8118)
  • Flexible power supplies
    Single +5 V supply, or dual ±2.5 V supplies
  • High impedance output disable allows connection of multiple devices with minimal loading on output bus
  • Excellent video performance
    >50 MHz 0.1 dB gain flatness
    0.05%/0.05° differential gain/phase error
    (RL = 150 Ω)
  • Differential or single-ended operation
  • Serial or parallel programming of switch array
  • Excellent ac performance
    Bandwidth: 600 MHz
    Slew rate: 1800 V/μs
    Settling time: 2.5 ns to 1%
  • Low power of 2.5 W
  • Low all hostile crosstalk < −70 dB @ 5 MHz
    < −43 dB @ 600 MHz
  • Reset pin allows disabling of all outputs (connected through a capacitor to ground provides power-on reset capability)
  • 304-ball BGA package (31 mm × 31 mm)

Functional Block Diagram for AD8118


Title Content Type File Type
AD8117: 600 MHz, 32 32 Buffered Analog Crosspoint Switches Data Sheet (Rev A, 05/2007) (pdf, 1015 kB) Data Sheets PDF
High Speed Switches  (pdf, 63 kB) Product Selection Guide PDF
Video Amplifier Products (April 2007)  (pdf, 4117 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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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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