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Notas de Diseño

• Descargar
  SOT-23 Micropower, Rail to Rail Op Amps Operate with Inputs Above the Positive Supply &mdash DN221
  PDF, 160 Kb, Archivo publicado: enero 1, 2001
  Extracto del documento

  SOT-23 Micropower, Rail-to-Rail Op Amps Operate with Inputs
  Above the Positive Supply – Design Note 221
  Raj Ramchandani
  Introduction
  The only SOT-23 op amps featuring Over-The-Top ® operation—the ability to operate with either or both inputs above
  the positive rail—are the 55µA LT®1782 and the 300µA
  LT1783. This feature is important in many current-sensing
  applications, where the inputs are required to operate at
  or above the supply. The wide supply voltage range, from
  2.7V to 18V, gives the LT1782/LT1783 broad appeal as
  general purpose amplifiers, while the guaranteed offset
  voltage of 950ВµV over temperature is the lowest of any
  SOT-23 op amp. There is even a shutdown feature for
  ultralow supply current applications.
  Tough General Purpose Op Amps
  The LT1782/LT1783 SOT-23 op amps are ideal for general
  purpose applications that demand excellent performance.
  These SOT-23 op amps are specified at input common
  mode voltages as high as 18V, independent of the supply
  voltage, making them ideal for applications with a wide
  input range requirement and/or unusual input conditions.
  In applications that require more bandwidth than the
  200kHz LT1782, the LT1783’s six-fold increase in supply …

• Descargar
  Dual 25ВµV Micropower Op Amp Fits in 3mm x 3mm Package &mdash DN331
  PDF, 82 Kb, Archivo publicado: feb 2, 2004
  Extracto del documento

  Dual 25ВµV Micropower Op Amp Fits in 3mm Г— 3mm Package
  Design Note 331
  Glen Brisebois
  Introduction
  Conventional monolithic micropower op amps with a
  wide supply voltage range require a large die area and
  therefore, a large package and footprint. The unconventional LTВ®6011 dual op amp п¬Ѓts 25ОјV input precision
  micropower operation and wide 2.7V to 36V supply range
  in a tiny new package—its 3mm × 3mm DFN package
  is so small it doesn’t even have leads. The LT6011 also
  provides rail-to-rail output swing and utilizes superbeta
  input transistors to achieve picoampere input currents.
  Hall Sensor Amplifier
  Figure 1 shows the LT6011 applied as a low power Hall
  sensor amplifier. The magnetic sensitivity of a Hall sensor is proportional to the DC excitation voltage applied
  across it. With a 1V bias voltage, the sensitivity of this
  Hall sensor is specified as 4mV/mTesla of magnetic
  п¬Ѓeld. At that level of DC bias, however, the 400О© bridge
  consumes 2.5mA. Reducing the excitation voltage would
  reduce the power consumption, but it would also reduce
  the sensitivity. This is where the beauty of precision
  micropower amplification becomes especially apparent.
  The LT1790-1.25 micropower reference provides a …

Artículos

• Descargar
  SOT-23 Micropower, Rail-to-Rail Op Amps Operate with Inputs above the Positive Supply &mdash LT Journal
  PDF, 186 Kb, Archivo publicado: nov 1, 1999
  Extracto del documento

  LINEAR TECHNOLOGY
  NOVEMBER 1999 IN THIS ISSUE…
  COVER ARTICLE
  SOT-23 Micropower, Rail-to-Rail
  Op Amps Operate with Inputs above
  the Positive Supply . 1
  Raj Ramchandani Issue Highlights . 2
  LTC® in the News… . 2
  DESIGN FEATURES
  3ppm/В°C Micropower Reference Draws
  Only 50Вµ A and Operates on 2.8V
  . 4 VOLUME IX NUMBER 4 SOT-23 Micropower,
  Rail-to-Rail Op Amps
  Operate with Inputs
  above the Positive
  Supply
  by Raj Ramchandani John Wright Smart Battery Charger Is
  Programmed via the SMBus . 6
  Mark Gurries LTC1755 Smart Card Interface
  Provides Inductorless Boost and
  Signal-Level Translators . 11
  Steven Martin LTВ®1306: Synchronous Boost DC/DC
  Converter Disconnects Output …

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Clasificación del fabricante

• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Low Power Amplifiers (Is < 1mA/amp) | Precision Amplifiers (Vos | High Voltage Amplifiers (>12V) | Rail-to-Rail Amplifiers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers

Otros nombres:

LT1782IS6TRMPBF, LT1782IS6 TRMPBF