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  Send Color Video 1000 Feet Over Low Cost Twisted-Pair &mdash DN65
  PDF, 132 Kb, Archivo publicado: dic 1, 1992
  Extracto del documento

  Send Color Video 1000 Feet Over Low Cost Twisted-Pair
  Design Note 65
  John Wright
  It is now possible to send and receive color composite video signals appreciable distances on a low cost
  twisted-pair. This technique is similar to the push toward
  twisted-pair cables in EtherNet systems to replace
  costly coaxial cable connections. The cost advantage of
  these techniques is significant. Standard 75Ω RG-59/U
  coaxial cable costs between 25Вў and 50Вў per foot, but
  a PVC twisted-pair is only pennies per foot. This means
  hundreds of dollars are saved in installations as short
  as 1000 feet, easily paying for additional electronics.
  The system also provides for “drops” or receiver taps
  along the twisted-pair. This bidirectional “video bus” consists of the low cost
  LT®1190 op amp and the LT1193 video difference amplifier shown in Figure 1. A pair of LT1190s at TRANSMIT 1,
  is used to generate differential signals to drive the line
  which is back-terminated in its characteristic impedance.
  These amplifiers have high 50mA load driving ability,
  while maintaining a very high 450V/Ојs slew rate and
  50MHz gain-bandwidth. The twisted-pair receiver is an
  LT1193 video difference amplifier at RECEIVE 1, and it
  converts signals from differential to single-ended. The
  LT1193 offers features unavailable with other op amp …

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• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > High Speed Amplifiers (GBW > 50MHz) | High Voltage Amplifiers (>12V)
• Signal Conditioning > Amplifiers > Video Functions

Otros nombres:

LT1187CS8PBF, LT1187CS8 PBF