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Notas de Diseño

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  A Complete Compact APD Bias Solution for a 10Gbits/s GPON System &mdash DN447
  PDF, 110 Kb, Archivo publicado: jul 14, 2008
  Extracto del documento

  A Complete Compact APD Bias Solution for a 10Gbits/s
  GPON System – Design Note 447
  Xin Qi
  Introduction
  Avalanche photo diode (APD) receiver modules are
  widely used in п¬Ѓber optic communication systems. An
  APD module contains the APD and a signal conditioning
  amplifier, but is not completely self contained. It still
  requires significant support circuitry including a high
  voltage, low noise power supply and a precision current
  monitor to indicate the signal strength. The challenge is
  squeezing this support circuitry into applications with
  limited board space. The LTВ®3482 addresses this challenge
  by integrating a monolithic DC/DC step-up converter and
  an accurate current monitor. The LT3482 can support
  up to a 90V APD bias voltage, and the current monitor
  provides better than 10% accuracy over four decades of
  dynamic range (250nA to 2.5mA).
  Recent communication design efforts increasingly focus
  on the 10Gbits/s GPON system, which demands that the
  transient response of the APD current monitor is less
  than 100ns for an input current step of two decades of
  magnitude. A simple compact circuit using the LT3482 is …

Artículos

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  LT1815: 220MHz, 1500V/µs Amplifier Saves Space and Power &mdash LT Journal
  PDF, 173 Kb, Archivo publicado: mayo 1, 2001
  Extracto del documento

  DESIGN FEATURES LT1815: 220MHz, 1500V/Вµs Amplifier
  Saves Space and Power
  by Kris Lokere
  Introduction
  The LT1815 is a low power, low distortion single op amp with a 220MHz
  gain bandwidth product and a 1500V/
  Вµs slew rate. The device operates with
  supplies from В±2V to В±6V and draws
  a typical supply current of only 6.5mA.
  The LT1815 can drive 100Ω loads
  with low distortion; typically the distortion products are –67dBc relative
  to a 5MHz, 2VP-P carrier. The LT1815
  is available in the space saving SOT23-5 and SOT-23-6 packages and the
  SO-8 package. The 6-lead SOT-23
  package features a current programming pin that allows the user to lower
  the supply current for even more
  power savings while the device
  Table 1. LT1815 key performance
  characteristics Value
  6.5mA
  220MHz
  1500V/Вµs
  80MHz –67dBc …

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Clasificación del fabricante

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

Otros nombres:

LT1815IS5PBF, LT1815IS5 PBF