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LTC2404 LTC2404

设计须知

• 下载
  24-Bit ADC Measures from DC to Daylight &mdash DN219
  PDF, 76 Kb, 档案已发布: Dec 1, 1999
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  24-Bit ADC Measures from DC to Daylight – Design Note 219
  Derek Redmayne
  The need to measure a wide variety of physical phenomena is increasingly important in intelligent sensors. The
  following circuit gives eight examples of the flexibility of
  the LTC В®2408 for sensing real world phenomena. The
  eight inputs of the LTC2408 are used here in a variety
  of ways that would not be practical without the dynamic
  range of the LTC2408.
  GUARD RING 5V ELECTROMETER
  INPUT
  (pH, PIEZO) 3 7 + 2 R5
  5k, 1% 6 LT1793 All of the examples shown use single-ended sensing
  and an absolute minimum of external circuitry. Inputs
  to the circuit shown range from high voltage DC to
  ultraviolet light. Output data represents amplitude or
  power levels for signals in all the AC inputs.
  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.
  DC
  VOLTMETER
  INPUT
  1mV TO 1000V R1 …

文章

• 下载
  No Latency Delta-Sigma ADC Techniques for Optimized Performance &mdash LT Journal
  PDF, 239 Kb, 档案已发布: May 1, 2001
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  DESIGN FEATURES Introduction Product Family Overview Linear Technology’s Delta-Sigma analog-to-digital converter product family
  simplifies a variety of applications.
  The products’ ease-of-use and high
  accuracy without the need for calibration, external clocks or complex
  interfaces enables designers to rethink
  their system architectures.
  Although 24 bits may seem excessive to some, many designers find
  significant advantages with these
  higher resolution converters. One
  such advantage is the elimination of
  front-end amplification. This enables
  direct digitization of many sensors
  while removing problems associated
  with front-end offset and gain errors
  as well as simplifying tare adjustments. One misconception commonly
  solved by designers using the
  LTC2400 family is the relationship
  between speed and resolution. Many
  designers have found that higher
  speed ADCs with averaging do not
  meet the one-shot performance of the
  LTC2400 family. The absolute accuracy of the LTC2400 family is
  demonstrated using a bridge sensor …

• 下载
  An 8-Channel, High-Accuracy, No Latency Delta Sigma 24-Bit ADC &mdash LT Journal
  PDF, 145 Kb, 档案已发布: Sep 1, 1999
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  DESIGN FEATURES An 8-Channel, High-Accuracy,
  No Latency ∆ Σ 24-Bit ADC by Michael K. Mayes
  Introduction
  Recently, Linear Technology introduced the world’s most accurate,
  simplest to use, 24-bit analog-to-digital converter, the LTC2400. With its
  on-chip oscillator, 120dB line-frequency rejection, user-transparent
  offset/full-scale calibration, 10 partsper-million (ppm) total unadjusted
  error and 1.5ВµV RMS noise, the
  LTC2400 has become a key building
  block in many system designs. The
  LTC2400’s ease of use and high performance enable faster design cycles
  and better performance than other
  ∆Σ converters.
  This article introduces the
  LTC2408, a device combining the high
  performance LTC2400 ADC core with
  an 8-channel analog input multiplexer
  (see Figure 1). This device offers many
  unique features. The single-cycle settling characteristics lead to simplified
  multiplexer hook up and channel
  selection, without the added overhead
  required other converters. The exceptional noise performance of the device
  eliminates the need for a programmable gain amplifier (PGA). This allows …

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制造商分类

• Data Conversion > Analog-to-Digital Converters (ADC) > Precision ADCs (Fs < 10Msps) > Multi Channel ADCs

其他名称:

LTC2408IGTRPBF, LTC2408IG TRPBF