GENERAL DESCRIPTION
The AD8108/AD8109 are high speed 8 × 8 video crosspoint switch matrices. They offer a −3 dB signal bandwidth greater than 250 MHz and channel switch times of less than 25 ns with 1% settling. With −83 dB of crosstalk and −98 dB isolation (@5 MHz), the AD8108/AD8109 are useful in many high speed applications.

FEATURES
   8 × 8 high speed nonblocking switch arrays
      AD8108: G = 1
      AD8109: G = 2
   Serial or parallel programming of switch array
   Serial data out allows daisy-chaining of multiple 8 × 8 arrays
      to create larger switch arrays
   Output disable allows connection of multiple devices
   Pin-compatible with AD8110/AD8111 16 × 8 switch arrays
   For 16 × 16 arrays see AD8116
   Complete solution
      Buffered inputs
      Eight output amplifiers
         AD8108 (G = 1)
         AD8109 (G = 2)
      Drives 150 Ω loads
   Excellent video performance
      60 MHz 0.1 dB gain flatness
      0.02%/0.02° differential gain/differential phase error
         (RL = 150 Ω)
   Excellent ac performance
      −3 dB bandwidth: 325 MHz (AD8108), 250 MHz (AD8109)
      Slew rate: 400 V/μs (AD8108), 480 V/μs (AD8109)
   Low power of 45 mA
   Low all hostile crosstalk of −83 dB @ 5 MHz
   Reset pin allows disabling of all outputs (connected through
      a capacitor to ground provides power-on reset capability)
   Excellent ESD rating: exceeds 4000 V human body model
   80-lead LQFP (12 mm × 12 mm)

APPLICATIONS
   Routing of high speed signals including
      Composite video (NTSC, PAL, S, SECAM)
      Component video (YUV, RGB)
      Compressed video (MPEG, Wavelet)
      3-level digital video (HDB3)