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LTC6102 LTC6102

应用须知

• 下载
  Current Sense Circuit Collection &mdash AN105
  PDF, 1.1 Mb, 档案已发布: Dec 6, 2005
  Sensing and/or controlling current flow is a fundamental requirement in many electronics systems, and the techniques to do so are as diverse as the applications themselves. This Application Note compiles solutions to current sensing problems and organizes the solutions by general application type. These circuits have been culled from a variety of Linear Technology documents.
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  Application Note 105
  December 2005
  Current Sense Circuit Collection
  Making Sense of Current
  Tim Regan, Jon Munson
  Greg Zimmer, Michael Stokowski
  INTRODUCTION
  Sensing and/or controlling current flow is a fundamental requirement in many electronics systems, and the
  techniques to do so are as diverse as the applications
  themselves. This Application Note compiles solutions to
  current sensing problems and organizes the solutions by
  general application type. These circuits have been culled
  from a variety of Linear Technology documents.
  Circuits Organized by General Application
  Each chapter collects together applications that tend to
  solve a similar general problem, such as high side current sensing, or negative supply sensing. The chapters are titled
  accordingly. In this way, the reader has access to many
  possible solutions to a particular problem in one place.
  It is unlikely that any particular circuit shown will exactly
  meet the requirements for a specific design, but the suggestion of many circuit techniques and devices should
  prove useful. To avoid duplication, circuits relevant to
  multiple chapters may appear in one location.
  L, LT, LTC, LTM, Linear Technology, the Linear logo, Over-The-Top and TimerBlox are …

设计须知

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  Ultraprecise Current Sense Amplifier Dramatically Enhances Efficiency and Dynamic Range &mdash DN423
  PDF, 139 Kb, 档案已发布: Jul 28, 2007
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  Ultraprecise Current Sense Amplifier Dramatically Enhances
  Efficiency and Dynamic Range – Design Note 423
  Jon Munson
  Introduction
  Accurate current measurement is indispensable in many
  electronic systems. The current is usually measured by
  amplifying the voltage it generates across a small value
  resistance. For systems that require a large dynamic measurement range, the sense resistance must be increased or
  the precision of the amplifier must be improved. Increasing
  the value of the sense resistor has the detrimental effect
  of increasing power dissipation. The better option is to
  improve the precision of the sense amplifier.
  Amplifier precision depends a great deal on the input
  offset voltage of the amplifier. Historically, current sense
  amplifiers on the market offered input offset voltage
  performance on the order of hundreds or even thousands
  of ОјV. With such parts, achieving a practical dynamic
  range of 8 to 10 bits can cost more than a Watt of power
  dissipation at full operating current. The LTC ®6102 ultraprecise current sense amplifier reduces input error to a
  miniscule 10ОјV. This dramatic performance enhancement
  translates directly into a greater measurement dynamic
  range—16 bits is possible even while lowering power
  dissipation in the sense resistor—thus greatly expanding …

文章

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  Measure Microamps to Amps or Reduce Power Dissipation by 99%, You Decide! &mdash LT Journal
  PDF, 309 Kb, 档案已发布: Oct 16, 2007
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  DESIGN FEATURES L Measure Microamps to Amps or
  Reduce Power Dissipation by 99%,
  by Brendan J. Whelan
  You Decide!
  Introduction Why Use High Side Sense?
  In many applications, the sense load
  is ground referred. The simplest way
  to measure current in these systems is
  low side sensing, which involves adding a small sense resistor between the
  load and the system ground (FigureВ 1).
  Almost any amplifier can be used to
  amplify the sense voltage, and no level
  translation is required.
  Low side sensing, for all its simplicity, has several inherent problems.
  First, the sense resistor affects the
  return voltage on the load—where
  the return is now the sum of the
  system’s ground potential and the
  voltage across the sense resistor. The
  load now floats above system ground
  by the sense voltage, which can be
  significant—a traditional low side
  current sense circuit of some precision requires a voltage around and …

• 下载
  3mm × 3mm, 16-Bit ADC Brings Accurate, Precise High Side Current Sensing to Tight Spaces &mdash LT Journal
  PDF, 92 Kb, 档案已发布: Sep 1, 2009
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  DESIGN IDEAS L 3mm × 3mm, 16-Bit ADC Brings
  Accurate, Precise High Side
  Current Sensing to Tight Spaces
  by Leo Chen Introduction
  Power monitoring circuits are increasingly used throughout automotive,
  industrial, communications and
  computing applications as electronics
  designers strive to continually improve thermal performance, increase
  efficiency and generally make their
  products more “green.”
  The problem is that power monitoring always looks like the perfect feature
  until space and cost constraints come
  into play. Power monitoring is usually
  considered an ancillary function, so
  its footprint should be as small as
  possible to maximize space available
  to the main application. The LTC2460
  16-bit Delta-Sigma ADC solves the
  space and design cost problem when
  paired with one of Linear Technology’s
  current sense amplifiers, such as the
  LTC6102.
  The LTC2460 proves that big-feature ADCs can come in tiny packages. …

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• Signal Conditioning > Amplifiers > Current Sense Amplifiers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers