Datasheet Linear Technology LT1800 — Даташит

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Design Notes

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  Fast and Accurate 80MHz Amplifier Draws Only 2mA &mdash DN286
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  Fast and Accurate 80MHz Amplifier Draws Only 2mA
  Design Note 286
  Glen Brisebois, William Jett, Dahn Tran
  Introduction
  The 80MHz LT®1800 amplifier provides the high speed
  and DC accuracy required by low voltage signal conditioning and data acquisition systems while consuming
  a mere 2mA max supply current. The LT1800 operates
  with supplies from 2.4V to 12V and its rail-to-rail inputs
  and outputs allow the entire supply range to be used.
  DC performance is exceptional; the maximum offset
  voltage is only 350ОјV and the maximum input bias
  current is only 250nA. The amplifier is also available in
  dual and quad versions as the LT1801 and the LT1802,
  respectively. All are available in commercial and industrial temperature grades. The LT1800 is available in
  SO and SOT-23 packages, the LT1801 dual in an SO-8
  package and the LT1802 quad in an SO-14 package.
  Single Supply 1A Laser Driver
  Figure 1 shows the LT1800 used in a 1A laser driver
  application. The LT1800 is well suited to this control
  task because its 2.4V operation ensures that it is awake
  at power-up and in control before the circuit can cause
  significant current to flow in the 2.1V threshold laser.
  Raising the noninverting input of the LT1800 causes its …

Статьи

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  Accurate and Fast 80MHz Amplifier Draws only 2mA &mdash LT Journal
  PDF, 219 Кб, Файл опубликован: 1 дек 2001
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  DESIGN FEATURES Accurate and Fast 80MHz Amplifier
  Draws only 2mA
  by William Jett, Danh Tran and Glen Brisebois
  Introduction Performance The 80MHz LT1800 amplifier consumes a mere 2mA max supply
  current and still provides both the
  speed and DC accuracy required by
  low voltage signal conditioning and
  data acquisition systems. Usually, one
  cannot have both high bandwidth
  and low supply-current in an amplifier, but the LT1800 optimizes both
  through a 6GHz fT process and by
  running the transistors at reduced
  quiescent currents. It can operate
  from supplies as low as 2.5V, and the entire supply range is available because of the device’s rail-to-rail inputs
  and outputs. The DC performance is
  exceptional, with a maximum offset
  voltage of 350ВµV. This comes from
  trimming the input offset voltage, and
  canceling the input bias currents,
  where the maximum input bias current is 250nA. The device is available
  in commercial and industrial temperature grades, in both SOIC and
  SOT-23 packages, making for a tiny
  and versatile amplifier. Table 1 summarizes the performance …

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• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Precision Amplifiers (Vos | High Speed Amplifiers (GBW > 50MHz) | High Voltage Amplifiers (>12V) | Low Noise Amplifiers ( | Rail-to-Rail Amplifiers