GENERAL DESCRIPTION
The AD8120 is a triple broadband skew-compensating delay line that corrects for time mismatch between video signals incurred by transmission in unshielded twisted pairs of Category 5 and Category 6 type cables. Skew between the individual pairs exists in most types of multipair UTP cables due to the different twist rates that are used for each pair to minimize crosstalk between pairs. For this reason, some pairs are longer than others, and in long cables, the difference in propagation time between two pairs can be well into the tens of nanoseconds.

FEATURES
   Corrects for unshielded twisted pair (UTP) cable skew
   Delay of up to 50 ns per channel
   High speed
      200 MHz BW @ VOUT = 1.4 V p-p and 0 ns delay
      150 MHz BW @ VOUT = 1.4 V p-p and 50 ns delay
   Excellent channel-to-channel matching
      30 mV offset matching RTI
      0.8% gain matching
   Low output offset
      ±30 mV RTI
      No external circuitry required to correct for offsets
   Independent red, green, and blue delay controls
   Drives 4 double-terminated video loads
   Digital and analog delay control
      6-bit SPI bus
      I2C bus
      Analog voltage control
   Fixed gain of 2
   Low noise
   High differential input impedance: 500 kΩ
   32-lead, 5 mm × 5 mm LFCSP

APPLICATIONS
   Keyboard-video-mouse (KVM)
   Digital signage
   RGB video over UTP cable
   Professional video projection and distribution
   HD video
   Security video
   General broadband delay lines