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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Design Notes

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  The LT1970 Op Amp Provides On-The-Fly Adjustable Current Limit for Flexibility and Load Protection in High Current Applications &mdash DN298
  PDF, 88 Кб, Файл опубликован: 3 окт 2002
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  Power Op Amp Provides On-the-Fly
  Adjustable Current Limit for Flexibility and Load Protection
  in High Current Applications
  Design Note 298 Tim Regan
  Introduction
  Many power operational amplifiers offer a built-in
  current limit where the limit is п¬Ѓxed or programmable
  through an external resistor. This offers the most basic
  measure of protection for the load circuitry, and the
  amplifier itself, under fault conditions. Sometimes,
  though, there is a need for on-the-fly current limiting to
  satisfy the requirements of different loads. For example,
  automatic test equipment (ATE) systems use multiple
  pin drivers to deliver test voltages across a wide range
  of loads, including faults, to a unit or board to test for
  continuity or functionality. To protect the load circuitry,
  the ATE must precisely control the maximum current
  delivered to each pin. Ideally the maximum current can
  be controlled on the fly, to accommodate the different
  loads at each pin. output current anywhere from 4mA to 500mA. Even
  at 500mA, the accuracy of the output current limit is
  guaranteed to a tight 2% (10mA) tolerance. The output
  current is continuously sensed by a small valued resistor, RS, connected in series with the load as shown in …

Статьи

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  Power Op Amp Protects Load Circuitry with Precise Current Limiting &mdash LT Journal
  PDF, 241 Кб, Файл опубликован: 9 авг 2004
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  LINEAR TECHNOLOGY
  VOLUME XII NUMBER 3 AUGUST 2002 IN THIS ISSUE…
  COVER ARTICLE
  Power Op Amp Protects Load Circuitry
  with Precise Current Limiting . 1
  Tim Regan Power Op Amp Protects
  Load Circuitry with
  Precise Current Limiting Issue Highlights . 2
  LTCВ® in the News . 2
  DESIGN FEATURES
  60V/3A Step-Down DC/DC Converter
  Maintains High Efficiency over a Wide
  Range of Input Voltages . 7
  Mark W. Marosek New Power for Ethernet—The
  LTC4255 Delivers (Part 1 of a 3-Part
  Series) . 9
  Dave Dwelley High Speed Low Noise Op Amp Family
  Challenges Power and Distortion
  Assumptions with Rail-to-Rail Inputs
  and Output . 12
  John Wright and Glen Brisbois Simplify Telecom Power Supply
  Monitoring with the LTC1921
  Integrated Dual –48V Supply and …

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  A Linear Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers &mdash LT Journal
  PDF, 197 Кб, Файл опубликован: 1 мар 2001
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  DESIGN IDEAS A Linear Thermoelectric Cooler
  Temperature Controller for
  Fiber Optic Lasers
  by Jim Williams
  usually included in the laser module
  by the laser manufacturer.
  In most cases the switching based
  approach is preferable to maintain
  high efficiency. Occasionally a linear
  controller is desirable because it eliminates inductors and saves space. A
  trade off in the linear approach is
  heat dissipation, which makes it useful in applications where space is
  premium, and the extra heat is manageable.
  Figure 1 shows the linear controller. The LTC2053 chopper stabilized
  instrumentation amplifier extracts an
  error signal from a bridge network.
  One bridge leg is a thermistor temperature sensor located within the
  laser module. The amplifier provides An article in an earlier issue of this
  magazine described a switched mode
  temperature controller for fiber optic
  lasers.1 This previous effort combined
  high efficiency switching regulator
  characteristics with precision, closed …

Модельный ряд

Классификация производителя

• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > High Output Current Amplifiers (>100mA) | High Voltage Amplifiers (>12V)

Варианты написания:

LT1970CFETRPBF, LT1970CFE TRPBF