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LT6015 LT6015 LT6016 LT6016

Notas de Diseño

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  Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs &mdash DN1034
  PDF, 371 Kb, Archivo publicado: oct 1, 2015
  Extracto del documento

  Low Power, Precision Op Amp Simplifies
  Driving of MUXed ADCs
  Design Note 1034
  Guy Hoover
  Introduction
  The high speed op amps required to buffer a modern
  16‑/18-bit analog-to-digital converter (ADC) typically
  dissipate as much power as the ADC itself, often with
  a maximum offset spec of aboutВ 1mV, well beyond
  that of the ADC. If multiple multichannel ADCs are
  required, the power dissipation can quickly rise to
  unacceptable levels.
  The simple buffer presented here is capable of driving
  the LTC В®2372-18 8-channel ADC and achieving near
  data sheet SNR, THD and offset performance with very
  low power dissipation if the input signals involved are
  in the range of DC to 1kHz.
  Circuit Description
  The LTC2372-18 is a low noise, 500ksps, 8-channel
  18‑bit successive approximation register (SAR)ADC.
  Operating from a single 5V supply, the LTC2372‑18
  achieves –110dB THD (typical), 100dB (fully
  differential)/95dB (pseudo-differential) SNR (typical) …

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  Robust High Voltage Over-The-Top Op Amps Maintain High Input Impedance with Inputs Driven Apart or When Powered Down &mdash DN533
  PDF, 293 Kb, Archivo publicado: nov 5, 2014
  Extracto del documento

  Robust High Voltage Over-The-Top Op Amps Maintain High
  Input Impedance with Inputs Driven Apart or When
  Powered Down
  Design Note 533
  Glen Brisebois
  Introduction
  Linear Technology’s Over-The-Top® op amps have
  an input stage topology that allows them to operate
  closed loop well above the positive supply rail. The
  inputs remain high impedance when split apart in
  voltage and also when shut down or with complete
  loss of power supply. They are indispensable in robust
  systems, where reliability is required in the face of
  uncertain power sequencing. The LT6015, LT6016 and
  LT6017 extend the op amp operational input voltage
  capability to 76V, and improve precision with trimmed
  offset voltage of 350ВµV (max) over all common mode
  input voltages and over temperature.
  Input Topology—Theory of Operation
  An Over-The-Top input stage is shown in Figure 1.
  At low common modes, the PNPs Q1 and Q2 form a
  conventional precision differential pair with tail current
  provided by I1. The diff pair forwards its collector currents into the folded cascode pair Q7, Q8, which then …

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Clasificación del fabricante

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

Otros nombres:

LT6017IDJCTRPBF, LT6017IDJC TRPBF