Datasheet Linear Technology LT1009S8 — Даташит

Datasheets

Цены

Купить LT1009S8 на РадиоЛоцман.Цены — от 61 до 695 ₽ 39 предложений от 25 поставщиков IC: источник опорного напряжения; 2,5В; ±0,4%; SO8; 20мА
Триема Россия	LT1009S8PBF Analog Devices	341 ₽	Купить
ТаймЧипс Россия	LT1009S8=1009	по запросу	Купить
ЗУМ-СМД Россия	LT1009S8#TRPBF Linear Technology	по запросу	Купить
Augswan Весь мир	LT1009S8#TR Analog Devices	по запросу	Купить

Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Другие варианты исполнения

LT1009 Series LT1009CMS8 LT1009CZ LT1009IS8 LT1009IZ

Application Notes

• Скачать
  Designing Linear Circuits for 5V Single Supply Operation &mdash AN11
  PDF, 230 Кб, Файл опубликован: 1 сен 1985
  This note covers the considerations for designing precision linear circuits which must operate from a single 5V supply. Applications include various transducer signal conditioners, instrumentation amplifiers, controllers and isolated data converters.
  Выписка из документа

  Application Note 11
  September 1985
  Designing Linear Circuits for 5V Single Supply Operation
  Jim Williams
  In predominantly digital systems it is often necessary
  to include linear circuit functions. Traditionally, separate
  power supplies have been used to run the linear components (see Box, “Linear Power Supplies—Past, Present,
  and Future”).
  Recently, there has been increasing interest in powering
  linear circuits directly from the 5V logic rail. The logic
  rail is a difficult place for analog components to function.
  The high amplitude broadband current and voltage noise
  generated by logic clocking makes analog circuit operation difficult. (See Box, “Using Logic Supplies for Linear
  Functions”.)
  Generally speaking, analog circuitry which must achieve
  very high performance levels should be driven from dedicated supplies. The difficulties encountered in maintaining
  the lowest possible levels of noise and drift in an analog
  system are challenging enough without contending with
  a digitally corrupted power supply.
  Many analog applications, however, can be successfully
  implemented using the logic supply. Combining components intended to provide high performance from the 167Ω Q1 –
  + 2M 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. RATIOMETRIC …

• Скачать
  High Speed Comparator Techniques &mdash AN13
  PDF, 1.1 Мб, Файл опубликован: 1 апр 1985
  The AN13 is an extensive discussion of the causes and cures of problems in very high speed comparator circuits. A separate applications section presents circuits, including a 0.025% accurate 1Hz to 30MHz V/F converter, a 200ns 0.01% sample-hold and a 10MHz fiber-optic receiver. Five appendices covering related topics complete this note.
  Выписка из документа

  Application Note 13
  April 1985
  High Speed Comparator Techniques
  Jim Williams
  INTRODUCTION
  Comparators may be the most underrated and underutilized monolithic linear component. This is unfortunate
  because comparators are one of the most flexible and
  universally applicable components available. In large
  measure the lack of recognition is due to the IC op amp,
  whose versatility allows it to dominate the analog design
  world. Comparators are frequently perceived as devices,
  which crudely express analog signals in digital form—a
  1-bit A/D converter. Strictly speaking, this viewpoint is
  correct. It is also wastefully constrictive in its outlook.
  Comparators don’t “just compare” in the same way that
  op amps don’t “just amplify”.
  Comparators, in particular high speed comparators, can
  be used to implement linear circuit functions which are
  as sophisticated as any op amp-based circuit. Judiciously
  combining a fast comparator with op amps is a key to
  achieving high performance results. In general, op ampbased circuits capitalize on their ability to close a feedback
  loop with precision. Ideally, such loops are maintained
  continuously over time. Conversely, comparator circuits …

• Скачать
  Designs for High Performance Voltage-to-Frequency Converters &mdash AN14
  PDF, 387 Кб, Файл опубликован: 1 мар 1986
  A variety of high performance V/F circuits is presented. Included are a 1Hz to 100MHz design, a quartz-stabilized type and a 0.0007% linear unit. Other circuits feature 1.5V operation, sine wave output an nonlinear transfer functions. A separate section examines the trade-offs and advantages of various approaches to V/F conversion.
  Выписка из документа

  Application Note 14
  March 1986
  Designs for High Performance Voltage-to-Frequency
  Converters
  Jim Williams
  Monolithic, modular and hybrid technologies have been
  used to implement voltage-to-frequency converters. A
  number of types are commercially available and overall
  performance is adequate to meet many requirements. In
  many cases, however, very high performance or special
  characteristics are required and available units will not work.
  In these instances V→F circuits specifically optimized for
  the desired parameters(s) are required. This application
  note presents examples of circuits which offer substantially improved performance over commercially available
  V→Fs. Various approaches (see Box Section, “V→F
  Design Techniques”) permit improvements in speed, dynamic range, stability and linearity. Other circuits feature
  low voltage operation, sine wave output and deliberate
  nonlinear transfer functions.
  Ultra-High Speed 1Hz to 100MHz V→F Converter
  Figure 1’s circuit uses a variety of circuit methods to
  achieve wider dynamic range and higher speed than any
  commercial V→F. Rocketing along at 100MHz full-scale
  (10% overrange to 110MHz is provided), it leaves all other …

• Скачать
  Thermocouple Measurement &mdash AN28
  PDF, 988 Кб, Файл опубликован: 1 фев 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.
  Выписка из документа

  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 …

• Скачать
  Some Thoughts on DC-DC Converters &mdash AN29
  PDF, 1.2 Мб, Файл опубликован: 1 окт 1988
  This note examines a wide range of DC/DC converter applications. Single inductor, transformer, and switched-capacitor converter designs are shown. Special topics like low noise, high efficiency, low quiescent current, high voltage, and wide-input voltage range converters are covered. Appended sections explain some fundamental properties of different types of converters.
  Выписка из документа

  Application Note 29
  October 1988
  Some Thoughts on DC/DC Converters
  Jim Williams and Brian Huffman
  INTRODUCTION
  Many systems require that the primary source of DC power
  be converted to other voltages. Battery driven circuitry is
  an obvious candidate. The 6V or 12V cell in a laptop computer must be converted to different potentials needed for
  memory, disc drives, display and operating logic. In theory,
  AC line powered systems should not need DC/DC converters
  because the implied power transformer can be equipped
  with multiple secondaries. In practice, economics, noise
  requirements, supply bus distribution problems and other
  constraints often make DC/DC conversion preferable. A
  common example is logic dominated, 5V powered systems
  utilizing В±15V driven analog components.
  The range of applications for DC/DC converters is large,
  with many variations. Interest in converters is commensurately quite high. Increased use of single supply powered
  systems, stiffening performance requirements and battery
  operation have increased converter usage.
  Historically, efficiency and size have received heavy emphasis. In fact, these parameters can be significant, but
  often are of secondary importance. A possible reason
  behind the continued and overwhelming attention to size …

• Скачать
  Applications for a Switched-Capacitor Instrumentation Building Block &mdash AN3
  PDF, 1.5 Мб, Файл опубликован: 1 июл 1985
  This application note describes a wide range of useful applications for the LTC1043 dual precision instrumentation switched capacitor building block. Some of the applications described are ultra high performance instrumentation amplifier, lock-in amplifier, wide range digitally controlled variable gain amplifier, relative humidity sensor signal conditioner, LVDT signal conditioner, charge pump F/V and V/F converters, 12-bit A/D converter and more.
  Выписка из документа

  Application Note 3
  July 1985
  Applications for a Switched-Capacitor Instrumentation
  Building Block
  Jim Williams
  CMOS analog IC design is largely based on manipulation
  of charge. Switches and capacitors are the elements used
  to control and distribute the charge. Monolithic п¬Ѓlters, data
  converters and voltage converters rely on the excellent
  characteristics of IC CMOS switches. Because of the importance of switches in their circuits, CMOS designers have
  developed techniques to minimize switch induced errors,
  particularly those associated with stray capacitance and
  switch timing. Until now, these techniques have been used
  only in the internal construction of monolithic devices. A
  new device, the LTCВ®1043, makes these switches available
  for board-level use. Multi-pole switching and a self-driven,
  non-overlapping clock allow the device to be used in circuits
  which are impractical with other switches. Conceptually, the LTC1043 is simple. Figure 1 details its
  features. The oscillator, free-running at 200kHz, drives a
  non-overlapping clock. Placing a capacitor from Pin 16 to
  ground shifts the oscillator frequency downward to any
  desired point. The pin may also be driven from an external
  source, synchronizing the switches to external circuitry. …

• Скачать
  Voltage Reference Circuit Collection &mdash AN42
  PDF, 1.7 Мб, Файл опубликован: 1 июн 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.
• Скачать
  Bridge Circuits &mdash AN43
  PDF, 3.8 Мб, Файл опубликован: 1 июн 1990
  Subtitled "Marrying Gain and Balance," this note covers signal conditioning circuits for various types of bridges. Included are transducer bridges, AC bridges, Wien bridge oscillators, Schottky bridges, and others. Special attention is given to amplifier selection criteria. Appended sections cover strain gauge transducers, understanding distortion measurements, and historical perspectives on bridge readout mechanisms and Wein bridge oscillators.
  Выписка из документа

  Application Note 43
  June 1990
  Bridge Circuits
  Marrying Gain and Balance
  Jim Williams
  Bridge circuits are among the most elemental and powerful
  electrical tools. They are found in measurement, switching, oscillator and transducer circuits. Additionally, bridge
  techniques are broadband, serving from DC to bandwidths
  well into the GHz range. The electrical analog of the mechanical beam balance, they are also the progenitor of all
  electrical differential techniques. and stability of the basic configuration. In particular, transducer manufacturers are quite adept at adapting the bridge
  to their needs (see Appendix A, “Strain Gauge Bridges”).
  Careful matching of the transducer’s mechanical characteristics to the bridge’s electrical response can provide a
  trimmed, calibrated output. Similarly, circuit designers
  have altered performance by adding active elements (e.g.,
  amplifiers) to the bridge, excitation source or both. Resistance Bridges
  Figure 1 shows a basic resistor bridge. The circuit is
  usually credited to Charles Wheatstone, although S. H.
  Christie, who demonstrated it in 1833, almost certainly
  preceded him.1 If all resistor values are equal (or the two
  sides ratios are equal) the differential voltage is zero. The
  excitation voltage does not alter this, as it affects both
  sides equally. When the bridge is operating off null, the
  excitation’s magnitude sets output sensitivity. The bridge …

• Скачать
  Applications of New Precision Op Amps &mdash AN6
  PDF, 784 Кб, Файл опубликован: 1 янв 1985
  Application considerations and circuits for the LT1001 and LT1002 single and dual precision amplifiers are illustrated in a number of circuits, including strain gauge signal conditioners, linearized platinum RTD circuits, an ultra precision dead zone circuit for motor servos and other examples.
• Скачать
  Some Techniques for Direct Digitization of Transducer Outputs &mdash AN7
  PDF, 297 Кб, Файл опубликован: 1 фев 1985
  Analog-to-digital conversion circuits which directly digitize low level transducer outputs, without DC preamplification, are presented. Covered are circuits which operate with thermocouples, strain gauges, humidity sensors, level transducers and other sensors.
  Выписка из документа

  Application Note 7
  February 1985
  Some Techniques for Direct Digitization of Transducer Outputs
  Jim Williams
  Almost all transducers produce low level signals. Normally,
  high accuracy signal conditioning amplifiers are used to
  boost these outputs to levels which can easily drive cables,
  additional circuitry, or data converters. This practice raises
  the signal processing range well above the error floor,
  permitting high resolution over a wide dynamic range.
  Some emerging trends in transducer-based systems are
  causing the use of signal conditioning amplifiers to be
  reevaluated. While these amplifiers will always be useful,
  their utilization may not be as universal as it once was.
  In particular, many industrial transducer-fed systems are
  employing digital transmission of signals to eliminate
  noise-induced inaccuracies in long cable runs. Additionally, the increasing digital content of systems, along with
  pressures on board space and cost, make it desirable to
  digitize transducer outputs as far forward in the signal chain
  as possible. These trends point toward direct digitization
  of transducer outputs—a difficult task.
  Classical A/D conversion techniques emphasize high level
  input ranges. This allows LSB step size to be as large …

• Скачать
  Understanding and Applying Voltage References &mdash AN82
  PDF, 172 Кб, Файл опубликован: 1 ноя 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.
  Выписка из документа

  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 …

Design Notes

• Скачать
  Data Acquisition Systems Communicate with Microprocessors Over 4 Wires &mdash DN1
  PDF, 75 Кб, Файл опубликован: 1 авг 1987
  Выписка из документа

  Data Acquisition Systems Communicate with
  Microprocessors Over 4 Wires – Design Note 1
  As board space and semiconductor package pins
  become more valuable, serial data transfer methods
  between microprocessors (MPUs) and their peripherals
  become more and more attractive. Not only does this
  save lines in the transmission medium, but, because
  of the savings in package pins, more function can be
  packed into both the MPU and the peripheral. Users are
  increasingly able to take advantage of these savings
  as more MPU manufacturers develop serial ports for
  their products1-3. However, peripherals which are able
  to communicate with these MPUs must be available in
  order for users to take full advantage. Also, MPU serial
  formats are not standardized so not all peripherals can
  talk to all MPUs.
  The LTC1090 Family
  A new family of 10-bit data acquisition circuits has
  been developed to communicate over just 4 wires to the
  recently developed MPU synchronous serial formats as
  well as to MPUs which do not have serial ports. These
  circuits feature software configurable analog circuitry
  including analog multiplexers, sample and holds, bipolar …

• Скачать
  Designing with a New Family of Instrumentation Amplifiers &mdash DN40
  PDF, 554 Кб, Файл опубликован: 1 окт 1990
  Выписка из документа

  Designing with a New Family of Instrumental Amplifiers
  Design Note 40
  Jim Williams
  A new family of IC instrumentation amplifiers achieves
  performance and cost advantages over other alternatives.
  Conceptually, an instrumentation amplifier is simple.
  Figure 1 shows that the device has passive, fully differential inputs, a single ended output and internally set
  gain. Additionally, the output is delivered with respect to
  the reference pin, which is usually grounded. Maintaining
  high performance with these features is difficult, accounting for the cost-performance disadvantages previously
  associated with instrumentation amplifiers.
  Figure 2 summarizes specifications for the amplifier
  family. The LTC В®1100 has the extremely low offset, drift,
  and bias current associated with chopper stabilization
  techniques. The LTВ®1101 requires only 105ВµA of supply
  current while retaining excellent DC characteristics. The
  FET input LT1102 features high speed while maintaining
  +
  – → NO FEEDBACK RESISTORS USED
  в†’ GAIN FIXED INTERNALLY (TYP 10 OR 100)
  OR SOMETIMES RESITOR PROGRAMMABLE
  в†’ BALANCED, PASSIVE INPUTS
  в†’ …

• Скачать
  Signal Conditioning for Platinum Temperature Transducers &mdash DN45
  PDF, 69 Кб, Файл опубликован: 1 мар 1991
  Выписка из документа

  Signal Conditioning for Platinum Temperature Transducers
  Design Note 45
  Jim Williams
  High accuracy, stability, and wide operating range make
  platinum RTDs (resistance temperature detectors)
  popular temperature transducers. Signal conditioning
  these devices requires care to utilize their desirable
  characteristics. Figure 1’s bridge-based circuit is highly
  accurate and features a ground referred RTD. The ground
  connection is often desirable for noise rejection. The
  bridges RTD leg is driven by a current source while the
  opposing bridge branch is voltage biased. The current
  drive allows the voltage across the RTD to vary directly
  with its temperature induced resistance shift. The difference between this potential and that of the opposing
  bridge leg forms the bridges output.
  A1A and instrumentation amplifier A2 form a voltage
  controlled current source. A1A, biased by the LTВ®1009
  reference, drives current through the 88.7О© resistor and
  the RTD. A2, sensing differentially across the 88.7Ω resistor, closes a loop back to A1A. The 2k-0.1μF combination sets amplifier roll-off, and the configuration
  is stable. Because A1A’s loop forces a fixed voltage
  across the 88.7О© resistor, the current through Rp is
  constant. A1’s operating point is primarily fixed by the
  2.5V LT1009 voltage reference. …

Статьи

• Скачать
  How to Choose a Voltage Reference &mdash LT Journal
  PDF, 282 Кб, Файл опубликован: 1 мар 2009
  Выписка из документа

  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 …

Модельный ряд

Классификация производителя

• Signal Conditioning > Voltage References > Shunt Voltage References
• Space & Harsh Environment > Space Qualified Products > Space Qualified Voltage References
• Space & Harsh Environment > Military Hermetic (M)