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Design Notes

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  An Autoranging True RMS Converter &mdash DN339
  PDF, 77 Kb, File published: Jun 1, 2004
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  An Autoranging True RMS Converter – Design Note 339
  Philip Karantzalis and Jim Mahoney
  True RMS voltage detection is most commonly required
  to measure complex amplitude and time varying signals,
  such as machine or engine vibration monitoring and
  complex AC power line load monitoring. Sometimes
  these applications require accurate input signal measurement over an extremely wide dynamic range—even
  more than the 50dB range of the LTC1966. One solution
  is to add an autoranging function to the LTC1966, thus Introduction
  The LTC В®1966 is a true RMS-to-DC converter that uses
  a ∆Σ computational technique to make it dramatically
  simpler to use, significantly more accurate, lower in
  power consumption and more flexible than conventional log-antilog RMS-to-DC converters. The LTC1966
  RMS-to-DC converter has an input signal range from
  5mVRMS to 1.5VRMS (a 50dB dynamic range with a
  single 5V supply rail) and a 3dB bandwidth of 800kHz
  with signal crest factors up to four. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks
  of Linear Technology Corporation. All other trademarks are the property of their
  respective owners.
  LT1783 BUFFER RMS-DC CONVERTER 5V 0.01ОјF 5V 0.1ОјF
  2 3 AGND G2 INPUT 4 IN G1 V– G0 0.1μF 1 OUTPUT 5
  0.1ОјF 6
  –5V GND VSS 8 1 4 WINDOW …

Articles

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  SOT-23 Digitally Controlled Amplifier Puts Programmable Gain Anywhere &mdash LT Journal
  PDF, 177 Kb, File published: Dec 1, 2002
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  DESIGN FEATURES SOT-23 Digitally Controlled Amplifier
  Puts Programmable Gain Anywhere
  by Max W. Hauser
  Introduction 50 V+
  2.7V TO 10V
  0.1ВµF LTC6910-1 is programmable for eight
  gain magnitudes of 0, 1, 2, 5, 10, 20,
  50, or 100 Volts/Volt—much like a
  classic oscilloscope amplifier plug-in
  or lab amplifier with a gain knob, but
  much smaller. This tiny DC-coupled,
  low-noise, self-contained amplifier,
  useful to low Megahertz frequencies,
  replaces expensive combinations of
  op amps and resistor arrays. The 8lead TSOT-23 package needs no other
  analog components. The LTC6910-1
  operates from single or dual supplies,
  2.7V to 10.5V total, and generates its
  own ground reference for use with
  single supplies. A simple 3-bit CMOS
  digital input controls the gain.
  The LTC6910-1 is an inverting voltage amplifier with a rail-to-rail output.
  At gains of unity and zero (digital …

Model Line

Manufacturer's Classification

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

Other Names:

LTC6910-1CTS8TRMPBF, LTC6910-1CTS8 TRMPBF, LTC69101CTS8#TRMPBF, LTC6910 1CTS8#TRMPBF