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LT6206 LT6206 LT6207 LT6207

Notas de Diseño

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  Video Signal Distribution Using Low Supply Voltage Amplifiers &mdash DN327
  PDF, 93 Kb, Archivo publicado: dic 1, 2003
  Extracto del documento

  Video Signal Distribution Using Low Supply Voltage Amplifiers
  Design Note 327
  Jon Munson
  Introduction
  Video designs are often pressed to operate on the lowest
  possible rail voltages—a simple result of the trend towards lower voltage logic and the advantages of sharing
  supply potentials wherever possible. Video designs are
  further complicated by the need to accommodate the
  dynamic offset variation inherent in AC-coupled designs
  as picture content varies. Traditional op amps require
  relatively large amounts of output-swing headroom and
  are therefore impractical for AC coupling at even 5V.
  Linear Technology offers a new family of video op amps
  which addresses these issues and offers the ability to
  operate down to 3.3V in most instances. This family
  includes the LTВ®6205 (single), LT6206 (dual), LT6207
  (quad), LT6550 (triple, п¬Ѓxed gain of 2) and LT6551
  (quad, п¬Ѓxed gain of 2).
  Video Signal Characteristics
  To determine the minimum video amplifier supply voltage, we must first examine the nature of the signal.
  Composite video is the most commonly used signal
  in broadcast-grade products and combines Luma (or
  luminance, the intensity information), Chroma (the colorimetry information) and Sync (vertical and horizontal …

• Descargar
  Driving a Low Noise, Low Distortion 18-Bit, 1.6Msps ADC &mdash DN494
  PDF, 1.1 Mb, Archivo publicado: agosto 1, 2011
  Extracto del documento

  Driving a Low Noise, Low Distortion 18-Bit, 1.6Msps ADC
  Design Note 494
  Guy Hoover
  Introduction
  The LTC В®2379-18 is an 18-bit, 1.6Msps SAR ADC with
  an extremely high SNR of 101dB and THD of –120dB. It
  also features a unique digital-gain compression function,
  which eliminates the need for a negative supply in the
  ADC driver circuit. the LTВ®6203 and minimizes disturbances reflected into
  the LT6203 from sampling transients. The 32k point FFT
  in Figure 2 shows the performance of the LTC2379-18 in
  the circuit of Figure 1.
  Single Supply Driver
  The circuit of Figure 3 uses the digital gain compression
  feature of the LTC2379-18, which defines the ADC full-scale
  input swing to be 10% to 90% of the reference voltage.
  This means that for a 5V reference the full-scale swing is Designing a driver circuit to get the best possible performance from the LTC2379-18 is not difficult. The two
  circuits presented here demonstrate differential and
  single-ended solutions using dual and single supplies.
  Note that the components used here have been carefully
  chosen with the ADC’s accuracy and acquisition time
  requirements in mind, so any modifications should be
  thoroughly tested. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of …

Artículos

• Descargar
  Video Signal Distribution Using Low Supply-Voltage Amplifiers &mdash LT Journal
  PDF, 164 Kb, Archivo publicado: dic 1, 2003
  Extracto del documento

  DESIGN IDEAS Video Signal Distribution Using
  Low Supply-Voltage Amplifiers
  by Jon Munson Introduction
  Video designs are often pressed to
  operate on the lowest possible rail
  voltages—a simple result of the trend
  towards lower voltage logic and the
  advantages of sharing supply potentials wherever possible. Video designs
  are further complicated by the need
  to accommodate the dynamic offset
  variation inherent in AC-coupled
  designs as picture content varies.
  Traditional op amps require relatively
  large amounts of output-swing headroom and are therefore impractical for
  AC coupling at even 5V. Linear Technology offers a new family of video op
  amps which addresses these issues
  and offers the ability to operate down
  to 3.3V in most instances. This family
  includes the LT6205 (single), LT6206
  (dual), LT6207 (quad), LT6550 (triple,
  fixed gain of 2), and LT6551 (quad,
  fixed gain of 2). Video Signal Characteristics
  To determine the minimum video amplifier supply voltage, we must first …

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• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Low Noise Amplifiers ( | Rail-to-Rail Amplifiers | High Speed Amplifiers (GBW > 50MHz) | High Voltage Amplifiers (>12V)
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers