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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Другие варианты исполнения

LTC1051 LTC1051

Design Notes

• Скачать
  Ultra Low Noise Op Amp Combines Chopper and Bipolar Op Amps &mdash DN36
  PDF, 99 Кб, Файл опубликован: 1 июл 1990
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  Ultra Low Noise Op Amp Combines Chopper and
  Bipolar Op Amps – Design Note 36
  Nello Sevastopoulos
  low noise voltage of the LTВ®1007 precision bipolar op
  amp appears in Figure 1. This composite op amp can,
  for instance, be used as a strain gauge amplifier. One
  half of the LTC1051 dual chopper op amp, LTC1051,
  integrates the small LT1007 input offset voltage and
  applies a DC correction voltage at its pin-8 via divider
  (R2, R3). The other half of the LTC1051, buffers the VOS
  nulling circuitry eliminating loading at input A. Resistors R1, R2, R3 allow the integrator full output swing
  assuring VOS correction of the LT1007. The ratio of R3
  to R2 is made as high as possible to limit noise injection
  of the chopper into pin-8 of the bipolar op amp. The
  total measured input VOS was 2ОјV, with a 10nV/В°C drift. Chopper op amp technology has continuously improved.
  Contemporary single, dual and quad low noise chopper
  op amps (LTCВ®1050/51/53), with internal sample and
  hold capacitors, are compatible with industry standard
  op amp sockets.
  Chopper op amps are mainly used to amplify small DC
  signals and these applications require excellent VOS, VOS
  drift, low bias current and low noise. The outstanding
  VOS performance of chopper op amps is well known. …

• Скачать
  Chopper vs Bipolar Op Amps—An Unbiased Comparison &mdash DN42
  PDF, 70 Кб, Файл опубликован: 1 дек 1990
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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
  ADVANTAGE
  PARAMETER
  Offset Voltage
  Offset Drift
  All Other DC Specs CHOPPER BIPOLAR COMMENTS
  вњ“
  вњ“
  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 …

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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