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  New Instrumentation Amplifiers Maximize Output Swing on Low Voltage Supplies &mdash DN323
  PDF, 83 Kb, Datei veröffentlicht: Oct 2, 2003
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  New Instrumentation Amplifiers Maximize Output Swing
  on Low Voltage Supplies – Design Note 323
  Glen Brisebois
  INTRODUCTION
  Instrumentation amplifiers suffer from a chronic output
  swing problem, even when the input common mode
  range and output voltage swing specifications are not
  violated. This is because the first stage of an instrumentation amplifier has internal output voltages that can
  clip at unspecified levels. The clipping itself is invisible
  to the user, but it affects the output swing adversely,
  usually causing a gain reduction and thus an invalid
  result. The new LTC В®6800 and LTВ®1789-10 both solve
  this output swing problem, but in two extremely different ways. The LTC6800 incorporates a flying capacitor
  differential level shifter followed by a rail-to-rail output
  autozero amplifier. The LT1789-10 is a more classical
  three op amp instrumentation amplifier with the twist
  that it takes gain in the п¬Ѓnal stage.
  A CLEARER PICTURE OF THE PROBLEM
  Figure 1 shows the classical three op amp instrumentation amplifier (IA) topology. Assume that the op amps
  involved can common mode to VS – and have rail-to-rail
  output stages. This would normally mean that the inputs
  can be anywhere from VS – to about a volt from VS+ and
  that the output can be anywhere within the supply rails. …

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Herstellerklassifikation

• Signal Conditioning > Amplifiers > Instrumentation Amplifiers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers

Andere Namen:

LTC6800HDDPBF, LTC6800HDD PBF