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Otras opciones

LTC6269 LTC6269

Notas de aplicación

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  Does Your Op Amp Oscillate? &mdash AN148
  PDF, 2.0 Mb, Archivo publicado: oct 9, 2014
  We analog designers take great pains to make our amplifiers stable when we design them, but there are many situations that cause them to oscillate in the real world. Various types of loads can make them sing. Improperly designed feedback networks can cause instability. Insufficient supply bypassing can offend. Finally, inputs and outputs can oscillate by themselves as oneport systems. This article will address common causes of oscillation and their remedies.
  Extracto del documento

  Application Note 148
  September 2014
  Does Your Op Amp Oscillate?
  Barry Harvey, Staff Design Engineer, Linear Technology® Corp. Well, it shouldn’t. We analog designers take great pains
  to make our amplifiers stable when we design them, but
  there are many situations that cause them to oscillate
  in the real world. Various types of loads can make them
  sing. Improperly designed feedback networks can cause
  instability. Insufficient supply bypassing can offend. Finally,
  inputs and outputs can oscillate by themselves as oneport systems. This article will address common causes
  of oscillation and their remedies.
  Some Basics
  Figure 1a shows the block diagram of a non-rail-to-rail
  amplifier. The inputs control the gm block which drives the
  gain node and is buffered at the output. The compensation
  capacitor CC is the dominant frequency response element. + +
  gm INPUTS – OUTPUT +1 – CC The return of CC would go to ground if there were such a
  pin; however op amps traditionally have no ground and
  the capacitor current will return to one or both supplies.
  Figure 1b is a block diagram of the simplest amplifier
  with rail-to-rail output. The input gm’s output current is
  sent through a current coupler that splits the drive current between the output transistors. Frequency response
  is dominated by the two CC/2s, which are effectively in …

Artículos

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  Op Amp Combines Femtoamp Bias Current with 4GHz Gain Bandwidth Product, Shines New Light on Photonics Applications &mdash LT Journal
  PDF, 3.2 Mb, Archivo publicado: jul 7, 2015
  Extracto del documento

  July 2015 Volume 25 Number 2 extend remote sensor Op Amp Combines Femtoamp Bias
  Current with 4GHz Gain Bandwidth
  Product, Shines New Light on
  Photonics Applications battery life with thermal Glen Brisebois I N T H I S I S S U E 4-phase supply supports
  120A in tiny footprint 10 one driver is all you
  need for automotive LED
  headlight clusters 17 energy harvesting 24 simplify small solar
  systems with hysteretic
  controller 27 powering a DustВ® mote
  from a piezo 29 Einstein published his seminal paper on the photoelectric effect
  110 years ago, essentially inventing the discipline of photonics. One
  would think that over so many years the science and engineering
  surrounding photonics must have fully matured. But not so. Optical
  sensors—photodiodes, avalanche photodiodes, and photomultiplier
  tubes—continue to achieve astoundingly high dynamic ranges,
  enabling electronics to peer ever more
  deeply into the photonic world.
  Photosensors typically convert photons to electron current
  and are followed by a transimpedance function to transform
  the current into a voltage. The transimpedance function
  may be either a simple resistor or, for higher bandwidth,
  the summing node of an op amp, in which case it is called
  a transimpedance amplifier (TIA). The traditional enemies …

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Clasificación del fabricante

• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > High Speed Amplifiers (GBW > 50MHz) | Low Bias Current Amplifiers (Ib < 100pA) | Low Noise Amplifiers ( | Rail-to-Rail Amplifiers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers

Otros nombres:

LTC6268IS6TRPBF, LTC6268IS6 TRPBF