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LT1353 LT1353

Notas de aplicación

• Descargar
  Buffered ADC Family Eliminates Signal Conditioning Complexity &mdash AN167
  PDF, 1.3 Mb, Archivo publicado: sept 20, 2017
  Extracto del documento

  Application Note 167
  September 2017
  Buffered ADC Family Eliminates
  Signal Conditioning Complexity
  Joe Sousa, Andrew Thomas, Clement Wagner, Mark Thoren
  Engineers often assume that analog-to-digital converter
  inputs are high impedance. Direct-sampling SAR ADC
  inputs will often be high impedance when not converting, but will draw “spikes” of current at the beginning
  of sample acquisition. On average, this behavior can be
  modeled as a crude nonlinear resistance that is inversely
  proportional to the sample capacitor size and sample rate,
  but instantaneously the signal chain must be able to settle
  completely in response to this abuse before acquisition
  ends and a conversion begins. Coupling a signal chain to an ADC is an art form, often requiring a combination of theory
  and experimentation. By contrast, the LTC2358 family of
  multi-channel, buffered high voltage SAR ADCs offers
  truly high impedance inputs that simplify or eliminate the
  need for signal conditioning in many cases. When signal
  conditioning is required, it can be directly connected to
  the LTC2358 inputs without regard to its ability to drive
  a switched capacitor. The following circuits show some
  applications that take advantage of the properties of the
  LTC2358 inputs. …

Notas de Diseño

• Descargar
  Low Power, Fast Op Amps Have Low Distortion &mdash DN148
  PDF, 74 Kb, Archivo publicado: feb 2, 1997
  Extracto del documento

  Low Power, Fast Op Amps Have Low Distortion
  Design Note 148
  George Feliz
  Introduction
  The LT®1351/LT1352/LT1353 family of low power operational amplifiers combines a slew rate of 200V/μs with
  a supply current of 250μA per amplifier. Both input and
  output stages have been optimized for linearity, achieving outstanding distortion performance with miserly
  quiescent current. The amplifier is available in single,
  dual and quad versions, in various packages, including
  the tiny MSOP package for the LT1351 single amplifier.
  A summary of key specifications is shown in Table 1. Table 1. Key Performance Features
  of the LT1351/LT1352/LT1353
  Power Supply Range + 0.01μF 7 0.1μF 4 –
  5 10ОјF 1
  2 – 5V
  Q1
  2N3906 3
  4
  10k 5
  6 – 5V 7
  8
  9
  10 …

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• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Low Power Amplifiers (Is < 1mA/amp) | High Voltage Amplifiers (>12V)