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AD8112:  Audio/Video, 60 MHz, 16 × 8, Gain of +2 Crosspoint Switch

Product Details


The AD8112 is a low cost, fully buffered crosspoint switch matrix that operates on ±12 V for audio applications and ±5 V for video applications. It offers a −3 dB signal bandwidth greater than 60 MHz and channel switch times of less than 60 ns with 0.1% settling for use in both analog and digital audio. The AD8112 operated at 20 kHz has a crosstalk performance of −83 dB and isolation of 90 dB. In addition, ground/power pins surround all inputs and outputs to provide extra shielding for operation in the most demanding audio routing applications. With a differential gain and differential phase better than 0.1% and 0.1°, respectively, and a 0.1 dB flatness output of up to 10 MHz, the AD8112 is suitable for many video applications.

The AD8112 includes eight independent output buffers that can be placed into a disabled state for paralleling crosspoint outputs so that off channel loading is minimized. The AD8112 has a gain of +2. It operates on voltage supplies of ±5 V or ±12 V while consuming only 34 mA or 31 mA of current, respectively. The channel switching is performed via a serial digital control (which can accommodate the daisy chaining of several devices) or via a parallel control, allowing updating of an individual output without reprogramming the entire array.

The AD8112 is packaged in a 100-lead LQFP and is available over the commercial temperature range of 0°C to 70°C.

Applications

  • CCTV surveillance/DVR
  • Analog/digital audio routers
  • Video routers (NTSC, PAL, S-Video, SECAM)
  • Multimedia systems
  • Video conferencing

FEATURES and BENEFITS

  • Low cost, 16 × 8, high speed, nonblocking switch array
    Pin-compatible 16 × 16 version available (AD8113)
  • Serial or parallel programming of switch array
  • Serial data out allows daisy chaining control of multiple
    16 × 8 arrays to create larger switch arrays
  • Output disable allows connection of multiple devices without loading the output bus
  • Complete solution
    Buffered inputs
    8 output amplifiers
    Operates on ±5 V or ±12 V supplies
    Low supply current of 54 mA
  • Excellent audio performance VS = ±12 V
    ±10 V output swing
    0.002% THD at 20 kHz maximum 20 V p-p (RL = 600 Ω)
  • Excellent video performance VS = ±5 V
    0.1 dB gain flatness of 10 MHz
    0.1% differential gain error (RL = 1 kΩ)
    0.1° differential phase error (RL = 1 kΩ)
  • Excellent ac performance
    −3 dB bandwidth 60 MHz
  • Low all-hostile crosstalk of −83 dB at 20 kHz
  • Reset pin allows disabling of all outputs (connected to a capacitor to ground provides power-on reset capability)
  • 100-lead LQFP (14 mm × 14 mm)

Functional Block Diagram for AD8112

Documentation

Title Content Type File Type
AD8112: Audio/Video, 60 MHz, 16 8, Gain of +2 Crosspoint Switch Data Sheet (Rev 0, 02/2007) (pdf, 1779 kB) Data Sheets 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.

AD8112 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8112-EVALZ Status: Production Evaluation Board $399.74 Yes -

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.

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