Datasheet Linear Technology LTC6943

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• Download
  Power Conversion, Measurement and Pulse Circuits &mdash AN113
  PDF, 692 Kb, File published: Aug 7, 2007
  This ink marks LTC’s eighth circuit collection publication.1 We are continually surprised, to the point of near mystification, by these circuit amalgams seemingly limitless appeal. Reader requests ascend rapidly upon publication, remaining high for years, even decades. All LTC circuit collections, despite diverse content, share this popularity, although just why remains an open question. Why is it? Perhaps the form; compact, complete, succinct and insular. Perhaps the freedom of selection without commitment, akin to window shopping. Or, perhaps, simply the pleasure of new recruits for the circuit aficionados intellectual palate. Locally based electrosociolgists, spinning elegantly contrived theories, offer explanation, but no convincing evidence is at hand. What is certain is that readers are attracted to these compendiums and that calls us to attention. As such, in accordance with our mission to serve customer preferences, this latest collection is presented. Enjoy.
  Extract from the document

  Application Note 113
  August 2007
  Power Conversion, Measurement and Pulse Circuits
  Tales From the Laboratory Notebook, 2005-2007
  Jim Williams
  INTRODUCTION
  This ink marks LTC’s eighth circuit collection publication.1
  We are continually surprised, to the point of near mystification, by these circuit amalgams seemingly limitless
  appeal. Reader requests ascend rapidly upon publication,
  remaining high for years, even decades. All LTC circuit
  collections, despite diverse content, share this popularity, although just why remains an open question. Why is
  it? Perhaps the form; compact, complete, succinct and
  insular. Perhaps the freedom of selection without commitment, akin to window shopping. Or, perhaps, simply
  the pleasure of new recruits for the circuit aficionados
  intellectual palate. Locally based electrosociolgists, spinning elegantly contrived theories, offer explanation, but
  no convincing evidence is at hand. What is certain is that
  readers are attracted to these compendiums and that calls
  us to attention. As such, in accordance with our mission
  to serve customer preferences, this latest collection is
  presented. Enjoy. all with outputs below 600mV, are typical power sources
  for such a converter.
  Figure 1, an N-channel JFET I-V plot, shows drain-source
  conduction under zero bias (gate and source tied together) …

• Download
  Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 2004 &mdash AN98
  PDF, 886 Kb, File published: Nov 19, 2004
  Eighteen circuits are presented in this compilation. Signal sources include a voltage controlled current source, an amplitude/frequency stabilized sine wave oscillator, a versatile, 0V to 50V wideband level shift and four sub-nanosecond pulse generators with risetimes as low as 20ps. Five signal conditioners appear; a unique, single positive rail powered amplifier with output to (and below) zero volts, a milliohmmeter, a 0.02% accurate instrumentation amplifier with 120dB CMRR at 125VCM, a 100MHz switch with 5mV control channel feedthrough and a 5V powered, 15ppm linearity quartz stabilized V→F, converter. The power circuits section features a Xenon flashlamp supply, two 5V powered, 0V to 300V DC/DC converters, a fixed 200V output circuit for APD bias, a 100W 0V to 500V, 28V powered converter and a high current paralleling scheme for linear regulators. Two appended sections consider measurement technique and connection practice in sub-nanosecond circuits.
  Extract from the document

  Application Note 98
  November 2004
  Signal Sources, Conditioners and Power Circuitry
  Circuits of the Fall, 2004
  Jim Williams
  Introduction
  Occasionally, we are tasked with designing circuitry for a
  specific purpose. The request may have customer origins
  or it may be an in-house requirement. Alternately, a circuit
  may be developed because its possibility is simply too
  attractive to ignore1. Over time, these circuits accumulate,
  encompassing a wide and useful body of proven capabilities. They also represent substantial effort. These considerations make publication an almost obligatory proposition
  and, as such, a group of circuits is presented here. This is
  not the first time we have displayed such wares and, given
  the encouraging reader response, it will not be the last2.
  Eighteen circuits are included in this latest effort, roughly
  arranged in the categories given in this publication’s title.
  They appear at the next paragraph.
  Voltage Controlled Current Source—Ground Referred
  Input and Output
  A voltage controlled current source with ground referred
  input and output is difficult to achieve. Executions exist,
  but are often cumbersome, involving numerous components. Figure 1’s conceptual design utilizes a differential …

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Manufacturer's Classification

• Signal Conditioning > Switched Cap Building Blocks
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers