Datasheet Linear Technology LT1019CN8-10 — Datenblatt

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LT1019 LT1019ACN8-10 LT1019ACN8-2.5 LT1019ACN8-4.5 LT1019ACN8-5 LT1019ACS8-2.5 LT1019ACS8-5 LT1019AIS8-2.5 LT1019AIS8-5 LT1019CN8-2.5 LT1019CN8-4.5 LT1019CN8-5 LT1019CS8-10 LT1019CS8-2.5 LT1019CS8-4.5 LT1019CS8-5 LT1019IN8-10 LT1019IN8-2.5 LT1019IN8-4.5 LT1019IN8-5 LT1019IS8-2.5 LT1019IS8-5

Anwendungshinweise

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  High Voltage, Low Noise, DC/DC Converters &mdash AN118
  PDF, 2.6 Mb, Datei veröffentlicht: Mar 28, 2008
  Photomultipliers (PMT), avalanche photodiodes (APD), ultrasonic transducers, capacitance microphones, radiation detectors and similar devices require high voltage, low current bias. Additionally, the high voltage must be pristinely free of noise; well under a millivolt is a common requirement with a few hundred microvolts sometimes necessary. Normally, switching regulator configurations cannot achieve this performance level without employing special techniques. One aid to achieving low noise is that load currents rarely exceed 5mA. This freedom permits output filtering methods that are usually impractical.
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  Application Note 118
  March 2008
  High Voltage, Low Noise, DC/DC Converters
  A Kilovolt with 100 Microvolts of Noise
  Jim Williams This publication describes a variety of circuits featuring
  outputs from 200V to 1000V with output noise below 100ВµV
  measured in a 100MHz bandwidth. Special techniques
  enable this performance, most notably power stages
  optimized to minimize high frequency harmonic content.
  Although sophisticated, all examples presented utilize
  standard, commercially available magnetics—no custom
  components are required. This provision is intended to
  assist the user in quickly arriving at a produceable design.
  Circuits and their descriptions are presented beginning
  with the next ink.
  BEFORE PROCEEDING ANY FURTHER, THE READER
  IS WARNED THAT CAUTION MUST BE USED IN THE
  CONSTRUCTION, TESTING AND USE OF THE TEXT’S
  CIRCUITS. HIGH VOLTAGE, LETHAL POTENTIALS ARE
  PRESENT IN THESE CIRCUITS. EXTREME CAUTION
  MUST BE USED IN WORKING WITH, AND MAKING
  CONNECTIONS TO, THESE CIRCUITS. REPEAT: THESE
  CIRCUITS CONTAIN DANGEROUS, HIGH VOLTAGE …

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  Thermocouple Measurement &mdash AN28
  PDF, 988 Kb, Datei veröffentlicht: Feb 1, 1988
  Considerations for thermocouple-based temperature measurement are discussed. A tutorial on temperature sensors summarizes performance of various types, establishing a perspective on thermocouples. Thermocouples are then focused on. Included are sections covering cold-junction compensation, amplifier selection, differential/isolation techniques, protection, and linearization. Complete schematics are given for all circuits. Processor- based linearization is also presented with the necessary software detailed.
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  Application Note 28
  February 1988
  Thermocouple Measurement
  Jim Williams
  Introduction Thermocouples in Perspective In 1822, Thomas Seebeck, an Estonian physician, accidentally joined semicircular pieces of bismuth and copper
  (Figure 1) while studying thermal effects on galvanic arrangements. A nearby compass indicated a magnetic disturbance. Seebeck experimented repeatedly with different
  metal combinations at various temperatures, noting relative
  magnetic п¬Ѓeld strengths. Curiously, he did not believe that
  electric current was flowing, and preferred to describe the
  effect as “thermo-magnetism.” He published his results in
  a paper, “Magnetische Polarisation der Metalle und Erze
  durch Temperatur-Differenz” (see references). Temperature is easily the most commonly measured
  physical parameter. A number of transducers serve temperature measuring needs and each has advantages and
  considerations. Before discussing thermocouple-based
  measurement it is worthwhile putting these sensors in
  perspective. Figure 2’s chart shows some common contact
  temperature sensors and lists characteristics. Study reveals
  thermocouple strengths and weaknesses compared to
  other sensors. In general, thermocouples are inexpensive,
  wide range sensors. Their small size makes them fast and
  their low output impedance is a benefit. The inherent voltage output eliminates the need for excitation. Subsequent investigation has shown the “Seebeck Effect”
  to be fundamentally electrical in nature, repeatable, and
  quite useful. Thermocouples, by far the most common …

• Herunterladen
  Converting Light to Digits: LTC1099 Half Flash 8-Bit A/D Converter Digitizes Photodiode Array &mdash AN33
  PDF, 703 Kb, Datei veröffentlicht: Mar 2, 1989
  This application note describes a Linear Technology "Half-Flash" A/D converter, the LTC1099, being connected to a 256 element line scan photodiode array. This technology adapts itself to handheld (i.e., low power) bar code readers, as well as high resolution automated machine inspection applications.
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  Voltage Reference Circuit Collection &mdash AN42
  PDF, 1.7 Mb, Datei veröffentlicht: Jun 1, 1991
  A wide variety of voltage reference circuits are detailed in this extensive guidebook of circuits. The detailed schematics cover simple and precision approaches at a variety of power levels. Included are 2 and 3 terminal devices in series and shunt modes for positive and negative polarities. Appended sections cover resistor and capacitor selection and trimming techniques.
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  Linear Technology Magazine Circuit Collection, Volume 1 &mdash AN52
  PDF, 190 Kb, Datei veröffentlicht: Jan 1, 1993
  This application note consolidates the circuits from the first few years of Linear Technology magazine into one publication. Presented in the note are a variety of circuits ranging from a 50W high efficiency (>90%) switching regulator to steep roll-off filter circuits with low distortion to 12-bit differential temperature measurement systems.
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  Application Note 52
  January 1993
  Linear Technology Magazine Circuit Collection, Volume 1
  Richard Markell, Editor
  Introduction
  Over the past several years Linear Technology, the magazine, has come of age. From nothing, the publication has
  come into its own, as has its subscriber list. Many innovative circuits have seen the light of day in the pages of our
  now hallowed publication. This Application Note is meant to consolidate the circuits
  from the first few years of the magazine in one place.
  Circuits herein range from laser diode driver circuits to
  data acquisition systems to a 50W high efficiency switcher
  circuit. Enough said. I’ll stand aside and let the authors
  explain their circuits.
  L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
  Technology Corporation. All other trademarks are the property of their respective owners. CIRCUIT INDEX
  A-to-D Converters .2
  LTC1292: 12-BIT DATA ACQUISITION CIRCUITS .2
  Temperature-Measurement System .2
  Floating, 12-Bit Data Acquisition System .2
  Differential Temperature Measurement System .2
  MICROPOWER SO8 PACKAGED ADC CIRCUITS .4
  Floating 8-Bit Data Acquisition System .4
  0В°C – 70В°C Thermometer .5 …

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  Understanding and Applying Voltage References &mdash AN82
  PDF, 172 Kb, Datei veröffentlicht: Nov 1, 1999
  Just how do bandgaps and buried Zeners stack up against Weston cells? Did you know your circuit board may induce more drift in a reference than time and temperature? Learn the answers to these and other commonly asked reference questions ranging from burn-in recommendations to ΔVBE generation in this Application Note.
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  Application Note 82
  November 1999
  Understanding and Applying Voltage References 30
  2 4 20
  8 3
  10 –20
  16
  32 4
  –30 5 Today’s IC reference technology is divided along two
  lines: bandgap references, which balance the temperature coefficient of a forward-biased diode junction against
  that of a ∆VBE (see Appendix B); and buried Zeners (see
  Appendix A), which use subsurface breakdown to achieve
  outstanding long-term stability and low noise. With few
  exceptions, both reference types use additional on-chip
  circuitry to further minimize temperature drift and trim
  output voltage to an exact value. Bandgap references are
  generally used in systems of up to 12 bits; buried Zeners
  take over from there in higher accuracy systems.
  , LTC and LT are registered trademarks of Linear Technology Corporation. –1 5
  3
  2 64 6
  1 –40 As with other specialized electronic fields, the field of
  monolithic references has its own vocabulary. We’ve …

Konstruktionshinweise

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  Temperature Measurement Using Data Acquisition Systems &mdash DN5
  PDF, 77 Kb, Datei veröffentlicht: Mar 1, 1989
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  Temperature Measurement Using Data Acquisition Systems
  Design Note 5
  William Rempfer and Guy Hoover
  Introduction
  Accurate temperature measurement is a difficult and
  very common problem. Whether recording a temperature, regulating a temperature or modifying a process
  to accommodate a temperature, the LTCВ®1090 family
  of data acquisition systems can provide an important
  link in the chain between the blast furnace temperature
  and the microcontroller. Features of the LTC1090 family
  can make temperature measurement easier, cheaper
  and more accurate.
  High DC input resistance and reduced span operation
  allow direct connection to many standard temperature
  sensors. Multiplexer options allow one chip to measure
  up to 8 channels of temperature information. Single
  supply operation, modest power requirements (~5mW)
  and serial interfaces make remote location possible.
  Switching power on and off lowers power consumption (560ОјW) even more for battery applications.
  Finally, because few sensors have accuracies as good as 0.1%, the 10-bit resolution and 0.05% accuracy of
  the LTC1090 family are just right for most temperature
  sensing applications.
  Thermocouple Systems …

Artikel

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  How to Choose a Voltage Reference &mdash LT Journal
  PDF, 282 Kb, Datei veröffentlicht: Mar 1, 2009
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  L DESIGN FEATURES How to Choose a Voltage Reference
  by Brendan Whelan Why Voltage References? 5V It is an analog world. All electronic
  devices must in some way interact with
  the “real” world, whether they are in
  an automobile, microwave oven or cell
  phone. To do that, electronics must be
  able to map real world measurements
  (speed, pressure, length, temperature)
  to a measurable quantity in the electronics world (voltage). Of course, to
  measure voltage, you need a standard
  to measure against. That standard is
  a voltage reference. The question for
  any system designer is not whether he
  needs a voltage reference, but rather,
  which one?
  A voltage reference is simply that—a
  circuit or circuit element that provides
  a known potential for as long as the circuit requires it. This may be minutes,
  hours or years. If a product requires
  information about the world, such VIN 18k LTC1286
  1
  2 LT1634-4.096 0.1ВµF 3
  4 VREF VCC +IN CLK –IN DOUT GND CS/SHDN 8 5V 7 …

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• Signal Conditioning > Voltage References > Series Voltage References