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LT1230 LT1230

Notas de aplicación

• Descargar
  Video Circuit Collection &mdash AN57
  PDF, 559 Kb, Archivo publicado: enero 2, 1994
  AN57, the Video Circuit Collection, features a variety of video circuits designed at LTC. The LT1204 70MHz multiplexer is featured in a number of circuits which require excellent video isolation from channel to channel. High speed voltage and current feedback amplifiers are highlighted throughout the section on video processing circuits. There is a section on applying Current Feedback Amplifiers (CFAs) and a number of articles taken from the Linear Technology magazine.
  Extracto del documento

  Application Note 57
  January 1994
  Video Circuit Collection
  Jon Munson and Frank Cox
  INTRODUCTION
  Even in a time of rapidly advancing digital image processing, analog video signal processing still remains eminently
  viable. The video A/D converters need a supply of properly
  amplified, limited, DC restored, clamped, clipped, contoured, multiplexed, faded and filtered analog video before
  they can accomplish anything. After the digital magic is
  performed, there is usually more amplifying and п¬Ѓltering
  to do as an adjunct to the D/A conversion process, not to mention all those pesky cables to drive. The analog way
  is often the most expedient and efficient, and you don’t
  have to write all that code.
  The foregoing is only partly in jest. The experienced engineer
  will use whatever method will properly get the job done;
  analog, digital or magic (more realistically, a combination
  of all three). Presented here is a collection of analog video
  circuits that have proven themselves useful. CIRCUIT INDEX
  I. Video Amplifier Selection Guide . 2 II. Video Cable Drivers . 3
  AC-Coupled Video Drivers . 3
  DC-Coupled Video Drivers . 4
  Clamped AC-Input Video Cable Driver . 5
  Twisted-Pair Video Driver and Receiver . 5 III. Video Processing Circuits . 6 …

Notas de Diseño

• Descargar
  Video Circuits Collection &mdash DN57
  PDF, 79 Kb, Archivo publicado: abr 1, 1992
  Extracto del documento

  Video Circuits Collection – Design Note 57
  William H. Gross
  Introduction
  This note shows how to make several different video
  circuits using high speed op amps. All of these circuits
  work with composite, RGB and monochrome video.
  For best results, bypass the power supply pins of
  these amplifiers with 1μF to 10μF tantalum capacitors
  in parallel with 0.01ОјF disc capacitors. It is important
  to terminate both ends of video cables to preserve
  frequency response. When properly terminated, the
  cable looks like a resistive load of 150О©.
  Lots of Inputs Video MUX Cable Driver (LT1227) Multiplex Amplifiers
  Often it is desirable to select one of several signals to
  send down a cable. Connecting the outputs of several
  amplifiers together and using the amplifier’s shutdown
  pin to disable all but one accomplishes this goal. The
  LTВ®1190, LT1191, LT1192, and LT1193 are shutdown by
  pulling pin 5 to the negative supply.
  The LT1223 and LT1227 current feedback amplifiers are
  shutdown by pulling Pin 8 to ground. During normal
  operation Pin 8 is open and at the positive supply potential. An easy way to interface Pin 8 to logic is with
  a logic level N-channel FET or a 74C906 (open-drain …

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Clasificación del fabricante

• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > High Speed Amplifiers (GBW > 50MHz) | Low Noise Amplifiers ( | Current Feedback Amplifiers | High Voltage Amplifiers (>12V)

Otros nombres:

LT1229CN8PBF, LT1229CN8 PBF