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• 下载
  Ultraprecise Instrumentation Amplifier Makes Robust Thermocouple Interface &mdash DN302
  PDF, 73 Kb, 档案已发布: Jan 1, 2003
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  Ultraprecise Instrumentation Amplifier Makes
  Robust Thermocouple Interface – Design Note 302
  Jon Munson
  Introduction
  The versatile and precise LTC В®2053 instrumentation
  amplifier provides an excellent platform for robust, low
  power instrumentation products—as exemplified below
  by the battery-powered thermocouple amplifier circuit.
  The LTC2053 offers exceptionally low 10ОјV maximum
  input offset along with 116dB typical CMRR and PSRR,
  a result of a combination of switched capacitor and zerodrift op amp technologies. It is optimized for low voltage
  supplies from 2.7V to 11V single ended or up to В±5.5V with
  split supplies. The LTC2053 is ideal for battery-powered
  instrument applications because of its low 850ОјA typical
  current draw. The gain is easily programmed with two
  resistors, as shown in Figure 1, just like a traditional
  non-inverting op amp. The LTC2053 also features low
  1/f noise and rail-to-rail I/O to maximize dynamic range.
  The Requirements of Thermocouple Amplification
  A robust thermocouple amplification circuit must meet
  several specific requirements. First, a commonly used
  type K thermocouple develops 40.6ОјV/В°C, and a standard
  readout scale is 10mV/В°C, so a precision ampliп¬Ѓer with …

文章

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  A Linear Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers &mdash LT Journal
  PDF, 197 Kb, 档案已发布: Mar 1, 2001
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  DESIGN IDEAS A Linear Thermoelectric Cooler
  Temperature Controller for
  Fiber Optic Lasers
  by Jim Williams
  usually included in the laser module
  by the laser manufacturer.
  In most cases the switching based
  approach is preferable to maintain
  high efficiency. Occasionally a linear
  controller is desirable because it eliminates inductors and saves space. A
  trade off in the linear approach is
  heat dissipation, which makes it useful in applications where space is
  premium, and the extra heat is manageable.
  Figure 1 shows the linear controller. The LTC2053 chopper stabilized
  instrumentation amplifier extracts an
  error signal from a bridge network.
  One bridge leg is a thermistor temperature sensor located within the
  laser module. The amplifier provides An article in an earlier issue of this
  magazine described a switched mode
  temperature controller for fiber optic
  lasers.1 This previous effort combined
  high efficiency switching regulator
  characteristics with precision, closed …

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  Unique Instrumentation Amplifier Precisely Senses Differential Voltages from mV to V &mdash LT Journal
  PDF, 146 Kb, 档案已发布: Mar 1, 2002
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  DESIGN FEATURES Unique Instrumentation Amplifier
  Precisely Senses Differential Voltages
  from ВµV to V by David Hutchinson and Nello Sevastopoulos
  Introduction
  The LTC2053 is the industry’s first
  instrumentation amplifier to feature
  a rail-to-rail input/output and a very
  high CMRR (guaranteed Common
  Mode Rejection Ratio of 110dB) that
  is gain-independent. This allows precision extraction of wide range of
  differential DC signals, from microvolts to volts, with common mode
  voltages anywhere between the supply rails.
  The LTC2053 uses sophisticated
  charge balanced techniques to convert a differential input voltage into a
  single ended signal. Figure 1 shows
  the structure of the device in a simplified block diagram. A set of switches
  extract and store the input differential voltage across an internal
  sampling capacitor CS. This charge is
  then transferred into an internal hold
  capacitor, CH. With this operation,
  the differential input signal is extracted from the input common mode
  voltage and is referenced to the bias
  voltage of the REF pin. The signal is …

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  Simple, Precise Instrumentation Amplifier Features Digitally Programmable Gains from 1 to 4096 &mdash LT Journal
  PDF, 363 Kb, 档案已发布: Mar 25, 2005
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  DESIGN FEATURES Simple, Precise Instrumentation
  Amplifier Features Digitally
  Programmable Gains from 1 to 4096
  by Michael Kultgen Introduction
  The LTCВ®6915 is the simplest, most
  precise way to obtain digitally programmable voltage gain. Any system
  which needs accurate amplification of
  small differential voltages and rejection of large common mode signals will
  benefit from the LTC6915.
  The LTC6915 is an evolution of the
  LTC2053, a precision rail-to-rail input
  and output, zero-drift instrumentation
  amplifier. Due to the amplifier’s very
  low DC errors, very high levels of gain
  can be taken in a single stage. The
  LTC2053 uses external resistors to set
  the gain; the LTC6915 uses a serial
  port or a parallel port to select internal
  resistors, and therefore select the gain.
  The gain can be programmed to 0, 1, 2,
  4, 8, 16, 32, 64, 128, 256, 512, 1024,
  2048, or 4096. Programmable gain
  increases the dynamic range of any …

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制造商分类

• Signal Conditioning > Amplifiers > Instrumentation Amplifiers
• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Rail-to-Rail Amplifiers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers

其他名称:

LTC2053IDDTRPBF, LTC2053IDD TRPBF