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Datasheet Linear Technology LTC1052CN#PBF

ПроизводительLinear Technology

Zero-Drift Operational Amplifier


  • Скачать » Datasheet, PDF, 871 Кб, Версия: A, Файл закачен: 31 июл 2016
    LTC1052/LTC7652 - Zero-Drift Operational Amplifier
    Выписка из документа ↓
    Operational Amplifier
    в–  в–  в–  DESCRIPTIO Guaranteed Max Offset: 5ВµV
    Guaranteed Max Offset Drift: 0.05ВµV/В°C
    Typ Offset Drift: 0.01ВµV/В°C
    Excellent Long Term Stability: 100nV/в€љMonth
    Guaranteed Max Input Bias Current: 30pA
    Over Operating Temperature Range:
    Guaranteed Min Gain: 120dB
    Guaranteed Min CMRR: 120dB
    Guaranteed Min PSRR: 120dB
    Single Supply Operation: 4.75V to 16V
    (Input Voltage Range Extends to Ground)
    External Capacitors can be Returned to V – with No
    Noise Degradation в– 
    в–  ...


Chopper-Stabilized Operational Amplifier(CSOATM)
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Корпус / Упаковка / Маркировка

Код корпусаN
Индекс корпуса05-08-1510 (N14)


Количество каналов1
Частота единичного усиления GBW1.2 МГц
Av Min Stable1 V/V
Avol90 дБ
CMRR140 дБ
Cload100 пФ
Demo BoardsDC417B
Design ToolsLTspice Model
Enoise Density30 нВ/rtГц
Экспортный контрольнет
Ibias0.001 нА
Inoise0.0006 пА/rtГц
Ios0.00003 мкА
Iout1.5 мА
Isupply1.7 мА
LF Enoise1.5 µVPP
Рабочий диапазон температурот 0 до 70 °C
PSRR150 дБ
Rail-to-RailIn to V-,Output
Rail-to-Rail Inнет
Rail-to-Rail Outда
SR4 В/мс
Single Supplyда
VinCM High (from V+)2 В
Voh (from V+)0.05 В
Vol (from V-)0.05 В
Vos0.0005 мВ
Vos TC0.01 мВ/C
Vs макс.18 В
Vs мин.4.75 В

Экологический статус


Application Notes

  • Скачать » Application Notes - AN11, PDF, 230 Кб, Файл опубликован: 1 сен 1985
    Designing Linear Circuits for 5V Single Supply Operation
    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
    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 » Application Notes - AN14, PDF, 387 Кб, Файл опубликован: 1 мар 1986
    Designs for High Performance Voltage-to-Frequency Converters
    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.
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    Application Note 14
    March 1986
    Designs for High Performance Voltage-to-Frequency
    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 » Application Notes - AN16, PDF, 421 Кб, Файл опубликован: 1 авг 1985
    Unique IC Buffer Enhances Op Amp Designs, Tames Fast Amplifiers
    This note describes some of the unique IC design techniques incorporated into a fast, monolithic power buffer, the LT1010. Also, some application ideas are described such as capacitive load driving, boosting fast op amp output current and power supply circuits.
    Выписка из документа ↓
    Application Note 16
    August 1985
    Unique IC Buffer Enhances Op Amp Designs,
    Tames Fast Amplifiers
    Robert J. Widlar
    Abstract: A unity gain IC power buffer that uses NPN
    output transistors while avoiding the usual problems of
    quasi-complementary designs is described. Free of parasitic oscillations and stable with large capacitive loads, the
    buffer has a 20MHz bandwidth, a 100V/Ојs slew and can
    drive В±10V into a 75О© load. Standby current is 5mA. A
    number of applications using the buffer are detailed, and
    it is shown that a buffer has many uses beyond driving
    a heavy load.
    An output buffer can do much more than increase the
    output swing of an op amp. It can also eliminate ringing
    with large capacitive loads. Fast buffers can improve the
    performance of high speed followers, integrators and
    sample/hold circuits, while at the same time making them
    much easier to work with.
    Interest in buffers has been low because a reasonably
    priced, high performance, general purpose part has not
    been available. Ideally, a buffer should be fast, have no ...
  • Скачать » Application Notes - AN21, PDF, 330 Кб, Файл опубликован: 1 июл 1986
    Composite Amplifiers
    Applications often require an amplifier that has extremely high performance in several areas. For example, high speed and DC precision are often needed. If a single device cannot simultaneously achieve the desired characteristics, a composite amplifier made up of two (or more) devices can be configured to do the job. AN21 shows examples of composite approaches in designs combining speed, precision, low noise and high power.
    Выписка из документа ↓
    Application Note 21
    July 1986
    Composite Amplifiers
    Jim Williams
    Amplifier design, regardless of the technology utilized, is
    a study in compromise. Device limitations make it difficult
    for a particular amplifier to achieve optimal speed, drift,
    bias current, noise and power output specifications. As
    such, various amplifier families emphasizing one or more
    of these areas have evolved. Some amplifiers are very good
    attempts at doing everything well, but the best achievable
    performance п¬Ѓgures are limited to dedicated designs. designed with little attention to DC biasing considerations
    if a separate stabilizing stage is employed.
    Figure 1 shows a composite made up of an LTВ®1012 low drift
    device and an LT1022 high speed amplifier. The overall circuit is a unity-gain inverter, with the summing node located
    at the junction of three 10k resistors. The LT1012 monitors
    this summing node, compares it to ground and drives the
    LT1022’s positive input, completing a DC stabilizing loop
    around the LT1022. The 10k-300pF time constant at the
    LT1012 limits its response to low frequency signals. The
    LT1022 handles high frequency inputs while the LT1012
    stabilizes the DC operating point. The 4.7k-220О© divider
    at the LT1022 prevents excessive input overdrive during ...
  • Скачать » Application Notes - AN28, PDF, 988 Кб, Файл опубликован: 1 фев 1988
    Thermocouple Measurement
    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 » Application Notes - AN3, PDF, 1.5 Мб, Файл опубликован: 1 июл 1985
    Applications for a Switched-Capacitor Instrumentation Building Block
    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.
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    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 » Application Notes - AN42, PDF, 1.7 Мб, Файл опубликован: 1 июн 1991
    Voltage Reference Circuit Collection
    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 » Application Notes - AN7, PDF, 297 Кб, Файл опубликован: 1 фев 1985
    Some Techniques for Direct Digitization of Transducer Outputs
    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 » Application Notes - AN9, PDF, 625 Кб, Файл опубликован: 5 авг 1986
    Application Considerations and Circuits for a New Chopper-Stabilized Op Amp
    A discussion of circuit, layout and construction considerations for low level DC circuits includes error analysis of solder, wire and connector junctions. Applications include sub-microvolt instrumentation and isolation amplifiers, stabilized buffers and comparators and precision data converters.
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    Application Note 9
    August 1986
    Application Considerations and Circuits for a New
    Chopper-Stabilized Op Amp
    Jim Williams
    A great deal of progress has been made in op amp DC
    characteristics. Carefully executed designs currently available provide sub-microvolt VOS О”T drift, low bias currents
    and open-loop gains exceeding one million. Considerable
    design and processing advances were required to achieve
    these specifications. Because of this, it is interesting to
    note that amplifiers with even better DC specification
    were available in 1963 (Philbrick Researches Model
    SP656). Although these modular amplifiers were large
    and expensive (≈3" × 2" × 1.5" at $195.00 1963 dollars)
    by modern standards, their DC performance anticipated
    today’s best monolithic amplifiers while using relatively
    primitive components. This was accomplished by employing chopper-stabilization techniques (see Box “Choppers,
    Chopper-Stabilization and the LTC®1052”) instead of the
    more common DC-differential stage approach.
    The chopper-stabilized approach, developed by E. A.
    Goldberg in 1948, uses the amplifier’s input to amplitude
    modulate an AC carrier. This carrier, amplified and synchronously demodulated back to DC, furnishes the amplifier’s PARAMETER
    EOS – 25°C ...

Design Notes

  • Скачать » Design Notes - DN42, PDF, 70 Кб, Файл опубликован: 1 дек 1990
    Chopper vs Bipolar Op Amps—An Unbiased Comparison
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    Chopper vs Bipolar Op Amps—An Unbiased Comparison
    Design Note 42
    George Erdi Table 1 lists the parameters of importance. In all input
    parameters (except noise) the advantage unquestionably goes to the choppers. 5ОјV maximum offset voltage, 0.5ОјV/В°C maximum drift are commonly found
    Table 1. Chopper Stabilized vs Precision Bipolar Op Amps
    Offset Voltage
    Offset Drift
    вњ“ No Contest Wideband, 20Hz to
    1MHz вњ“ See Details in Text Noise вњ“ See Details in Text вњ“ Rail to Rail Swing
    2mA Limit on
    Choppers Output: Light Load
    Heavy Load
    Single Supply
    Application вњ“ вњ“ Inherent to
    Choppers Needs
    Special Design
    Bipolars В±15V Supply Voltage вњ“ Except LTC1150 Prejudice/Tradition вњ“ Still a Chopper
    Problem Cost 08/90/86_conv вњ“ Unless DC ...

Модельный ряд

Серия: LTC1052 (4)

Классификация производителя

  • Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Precision Amplifiers (Vos | Zero-Drift Amplifiers | Low Bias Current Amplifiers (Ib < 100pA) | High Voltage Amplifiers (>12V) | Rail-to-Rail Amplifiers

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