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Design Notes

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  Design Low Noise Differential Circuits Using the LT1567 Dual Amplifier Building Block &mdash DN291
  PDF, 85 Kb, File published: Aug 1, 2002
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  Design Low Noise Differential Circuits Using the LT1567 Dual
  Amplifier Building Block
  Design Note 291
  Philip Karantzalis
  Introduction
  Many communications systems use differential, low
  level (400mV to 1V peak-to-peak), analog baseband
  signals where the baseband circuitry operates from
  a single low voltage power supply (5V to 3V). Any
  differential amplifier circuit used for baseband signal
  conditioning must have very low noise and an output
  voltage swing that includes most of the power supply
  range for maximum signal dynamic range. The LTВ®1567,
  a low noise operational amplifier (1.4nV/√Hz voltage
  noise density) and a unity-gain inverter, is an excellent
  analog building block (see Figure 1) for designing low
  noise differential circuits. The gain bandwidth of the
  LT1567 amplifier is 160MHz and its slew rate is sufficient for signal frequencies up to 5MHz. The LT1567
  operates from 2.7V to 12V total power supply. The
  output voltage swing is guaranteed to be 4.4V and
  2.6V peak-to-peak, at 1k load with a single 5V and 3V
  power supply, respectively. The LT1567 is available in
  an 8-lead MSOP surface mount package. …

Articles

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  Design Low Noise Differential Circuits Using the LT1567 Dual Amplifier Building Block &mdash LT Journal
  PDF, 55 Kb, File published: May 1, 2002
  Extract from the document

  DESIGN IDEAS Design Low Noise Differential Circuits
  Using the LT1567 Dual Amplifier
  by Philip Karantzalis
  Building Block
  Introduction
  Many communications systems use
  differential, low level (400mV – 1V
  peak-to-peak), analog baseband signals, where the baseband circuitry
  operates from with a single low voltage power supply (5V to 3V). Any
  differential amplifier circuit used for
  baseband signal conditioning must
  have very low noise, and an output
  voltage swing that includes most of
  the power supply range for maximum
  signal dynamic range. The LT1567, a
  low noise operational amplifier
  (1.4nV/в€љHz voltage noise density) and
  a unity-gain inverter, is an excellent
  analog building block (see Figure 1)
  for designing low noise differential
  circuits. The typical gain bandwidth
  of the LT1567 amplifier is 180MHz
  and op amp slew rate is sufficient for …

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Manufacturer's Classification

• Signal Conditioning > Filters > Filter Building Blocks

Other Names:

LT1567CMS8TRPBF, LT1567CMS8 TRPBF