Datasheet Linear Technology LTC1092 — 数据表

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参数化

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LTC1091 LTC1091 LTC1093 LTC1093 LTC1094 LTC1094

应用须知

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  Interfacing the LTC1090/1/2 &mdash AN26 (A-R)
  PDF, 5.6 Mb, 档案已发布: Jan 23, 1988
  A collection of interface applications between various microprocessors/ controllers and the LTC1090 family of data acquisition systems. The note is divided into sections specific to each interface.
• 下载
  Data Acquisition Circuit Collection &mdash AN62
  PDF, 349 Kb, 档案已发布: Oct 1, 1994
  This application note presents a wide variety of data acquisition circuits. The detailed circuit schematics cover 8-, 10-, and 12- bit ADC and DAC applications, serial and parallel digital interfaces, battery monitoring, temperature sensing, isolated interfaces, and connections to various popular microprocessors and microcontrollers. An appendix covers suggested voltage references.
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  Application Note 62
  October 1994
  Data Acquisition Circuit Collection
  Kevin R. Hoskins
  INTRODUCTION
  This application note features 8-, 10-, and 12-bit data
  acquisition components in various circuit configurations.
  The circuits include battery monitoring, temperature sensing, isolated serial interfaces, and microprocessor and
  microcontroller serial and parallel interfaces. Also included are voltage reference circuits (Application Note 42
  contains more voltage reference circuits). Additional circuit information is located in the information
  references listed in the Circuit Index. Each information
  reference refers to either an application note (example:
  AN42 = Application Note 42), a data sheet (example:
  LTCВ®1292 DS = LTC1292 Data Sheet), or a design note
  (example: DN66 = Design Note 66).
  and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation. CIRCUIT INDEX
  FIGURE TITLE
  FIGURE NO.
  General Analog-to-Digital Application Circuits
  Two-Quadrant 150kHz Bandwidth Analog Multiplier . Figure 1 .
  Infinite Hold-Time Sample-and-Hold (tACQ = 240ns) . Figure 2 .
  Four-Quadrant 250kHz Bandwidth Analog Multiplier . Figure 3 .
  Demodulating a Signal Using Undersampling . Figure 4 . …

设计须知

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  Closed Loop Control with Data Acquisition Systems &mdash DN13
  PDF, 95 Kb, 档案已发布: Aug 1, 1988
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  Closed Loop Control with Data Acquisition Systems
  Design Note 13
  Guy Hoover and William Rempfer
  Introduction
  The use of microprocessors in process control loops
  is quite common. A processor based control loop requires special design considerations as compared to
  traditional analog loops. Often a single centrally located
  processor will be used to control several remotely
  located processes. The outputs of the remote process
  sensors can be digitized at the sensor location and then
  be transmitted to the central processor. Unfortunately,
  transmitting digital signals typically requires one wire
  for each bit of resolution and requires expensive cabling.
  Alternatively, the sensor output can be transmitted
  as an analog signal to the central processor area for
  digitization. However, transmitting analog signals over
  distances can introduce errors because of noise and
  voltage drops in the wires.
  The solution to these control loop problems can be found
  in the LTC В®1090 series of data acquisition systems. As
  can be seen in the schematic of Figure 2, ten bits of
  data can be digitized remotely and sent to the processor
  with only three wires plus ground. The single supply …

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  A Two Wire Isolated and Powered 10-Bit Data Acquisition System &mdash DN19
  PDF, 81 Kb, 档案已发布: Jan 1, 1989
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  A Two Wire Isolated and Powered 10-Bit Data Acquisition Sytem
  Design Note 19
  Guy Hoover and William Rempfer
  Introduction
  For reasons of safety or to eliminate error producing
  ground loops, it is often necessary to provide electrical
  isolation between measurement points and the microprocessor. Unfortunately, the isolated side of this measurement system must still be provided with power. One
  alternative is to power the isolated side of the circuit with
  batteries. This solution works if power consumption is
  low, environmental conditions are mild and the batteries
  are easily accessible. If these conditions are not met a
  separate isolated supply may be constructed. This can be
  both difficult and expensive. This design note describes
  a transformer isolated system in which one small pulse
  transformer provides both power and a data path.
  The circuit of Figure 1 is a 10-bit data acquisition system
  with 700V of isolation. The circuit takes advantage of the
  serial architecture of the LTC В®1092 which allows data
  and power to be transmitted using only one transformer.
  A 10-bit conversion can be completed and the data transferred to the microprocessor in 100Ојs. Using standard
  ribbon cable the isolated side of this circuit has been remotely located as much as 50 feet from the transformer
  without affecting circuit performance.
  Circuit Description …

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  Temperature Measurement Using Data Acquisition Systems &mdash DN5
  PDF, 77 Kb, 档案已发布: Mar 1, 1989
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  Temperature Measurement Using Data Acquisition Systems
  Design Note 5
  William Rempfer and Guy Hoover
  Introduction
  Accurate temperature measurement is a difficult and
  very common problem. Whether recording a temperature, regulating a temperature or modifying a process
  to accommodate a temperature, the LTCВ®1090 family
  of data acquisition systems can provide an important
  link in the chain between the blast furnace temperature
  and the microcontroller. Features of the LTC1090 family
  can make temperature measurement easier, cheaper
  and more accurate.
  High DC input resistance and reduced span operation
  allow direct connection to many standard temperature
  sensors. Multiplexer options allow one chip to measure
  up to 8 channels of temperature information. Single
  supply operation, modest power requirements (~5mW)
  and serial interfaces make remote location possible.
  Switching power on and off lowers power consumption (560ОјW) even more for battery applications.
  Finally, because few sensors have accuracies as good as 0.1%, the 10-bit resolution and 0.05% accuracy of
  the LTC1090 family are just right for most temperature
  sensing applications.
  Thermocouple Systems …

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