Datasheet Linear Technology LTC4151

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Design Notes

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  Power Monitor for Automotive and Telecom Applications Includes ADC and I2C Interface &mdash DN452
  PDF, 89 Kb, File published: Sep 23, 2008
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  Power Monitor for Automotive and Telecom Applications
  Includes ADC and I2C Interface – Design Note 452
  Dilian Reyes
  Introduction
  The LTC В®4151 is a high side power monitor that includes
  a 12-bit ADC for measuring current and voltage, as well
  as the voltage on an auxiliary input. Data is read through
  the widely used I2C interface. An unusual feature in this
  device is its 7V to 80V operating range, allowing it to cover
  applications from 12V automotive to 48V telecom. socket would drain the battery considerably faster than
  the GPS. The digital information from the LTC4151 high
  resolution and accurate 12-bit ADC can be interpreted
  and displayed on an in-dash screen, or used by the host
  system to shut down the channel to avoid fully draining
  the battery.
  Telecom Power Monitoring with PoE
  One major advantage of the wide range input voltage
  of the LTC4151 is the ability to monitor higher voltage
  applications such as those used in telecommunications. The emerging IEEE802.3af Power over Ethernet
  (PoE) standard has gained much interest in the past
  few years. Automotive Power Monitoring
  Automobile batteries serve more systems than ever
  before, many of which operate when the battery is not …

Articles

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  Voltage and Current Monitoring from 7V to 80V in 3mm × 3mm DFN-10 &mdash LT Journal
  PDF, 294 Kb, File published: Mar 19, 2008
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  DESIGN FEATURES L Voltage and Current Monitoring from
  7V to 80V in 3mm Г— 3mm DFN-10
  by Zhizhong Hou
  Introduction
  Accurate power supply voltage and
  current monitoring is increasingly
  important in everything from industrial and telecom applications to
  automotive and consumer electronics.
  A complete power monitoring system
  typically includes a sense resistor, a
  precision amplifier, an analog to digital
  converter (ADC) and a proper interface
  to report data to a host controller. The
  LTC4151 and LTC4151-1 combine all
  of these components (except the sense
  resistor) into one IC, resulting in a full
  featured, rugged and simple-to-use
  solution for accurate high side current sensing and voltage monitoring
  (see Figure 1). The LTC4151 and
  LTC4151-1 offer the benefits
  of high side current sensing
  without any of the usual
  complexity. Each integrates …

Model Line

Manufacturer's Classification

• Signal Conditioning > Amplifiers > Current Sense Amplifiers
• Monitor, Control and Protection > Power Monitors
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) System Monitor