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

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 ...More

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

Product Description

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

    • Data Sheet, Rev. 0, 2/07

    Features

    • 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)

    Diagrams

    AD8112 Diagram
    Functional Block Diagram for AD8112

    Specifications

    Type 16 x 8
    Output Buffer Yes G = 2
    Supply Voltage (V) ±12V
    Output Swing (V) ±10V
    Small Signal BW (MHz) 60MHz
    Slew Rate (V/us) 100
    Cross Talk @ 10 MHz (-dB) 83 @ 20 kHz
    Control Interface Serial/Parallel

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    Part# Type Output Buffer Supply Voltage (V) Output Swing (V) Small Signal BW (MHz) Slew Rate (V/us) Cross Talk @ 10 MHz (-dB) Price* (1000-4999)
    AD8104 32 x 16 Yes G = 1 ±2.5 ±2 600 1,800 72 $177.10
    AD8105 32 x 16 Yes G = 2 ±2.5 ±2 600 1,800 68 $177.10
    AD8106 16 x 5 Yes G = 1 ±5 ±3 390 500 70 $15.13
    AD8107 16 x 5 Yes G = 2 ±5 ±3 260 500 80 $15.13
    AD8108 8 X 8 Yes G = 1 ±5 ±2.5 350 400 76 $18.72
    AD8109 8 X 8 Yes G = 2 ±5 ±3 250 480 83 $18.72
    AD8110 16 x 8 Yes G = 1 ±5 ±3 390 500 70 $32.89
    AD8111 16 x 8 Yes G = 2 ±5 ±3 260 500 80 $32.89
    AD8112 16 x 8 Yes G = 2 ±12 ±10 60 100 83 @ 20 kHz $10.07
    AD8113 16 X 16 Yes G = 2 ±12 ±10 60 100 83 @ 20 kHz $25.25
    AD8114 16 X 16 Yes G = 1 ±5 ±3 225 375 60 $54.64
    AD8115 16 X 16 Yes G = 2 ±5 ±3 200 450 52 $54.64
    AD8116 16 X 16 Yes G = 1 ±5 ±3 200 300 60 $79.95
    AD8117 32 X 32 Yes G = 1 ±2.5 ±2 600 1,800 65 $298.54
    AD8118 32 X 32 Yes G = 2 ±2.5 ±2 600 1,800 70 $298.54
    AD8175 Triple 16 x 9 Yes G = 2 ±2.5 ±2 500 1,800 82 $96.14
    AD8176 Triple 16 x 9 Yes G = 4 ±2.5 ±2 450 1,650 74 $96.14
    AD8177 Triple 16 x 5 Yes G = 2 ±2.5 ±2 500 1,800 82 $60.21
    AD8178 Triple 16 x 5 Yes G = 4 ±2.5 ±2 450 1,650 74 $60.21
    ADG2128 16 x 8 No ±5 ±5 300 n/a 79 dB @ 5 MHz $6.25
    ADV3200 32 X 32 Yes G = 1 ±2.5 ±1.2