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Application Notes

• Download
  Linear Technology Magazine Circuit Collection, Volume III &mdash AN67
  PDF, 1.2 Mb, File published: Sep 1, 1996
  Application Note 67 is a collection of circuits for data conversion, interface and signal processing from the first five years of Linear Technology. This application note includes circuits such as fast video multiplexers for high speed video, an ultraselective bandpass filter circuit with adjustable gain, and a fully differential, 8-channel, 12-bit A/D system. The categories included in this app note are data conversion, interface, filters, instrumentation, video/op amps and miscellaneous circuits.
  Extract from the document

  Application Note 67
  September 1996
  Linear Technology Magazine Circuit Collection, Volume III
  Data Conversion, Interface and Signal Processing
  Richard Markell, Editor
  INTRODUCTION
  Application Note 67 is a collection of circuits from the first
  five years of Linear Technology, targeting data conversion,
  interface and signal processing applications. This
  Application Note includes circuits such as fast video
  multiplexers for high speed video, an ultraselective
  bandpass filter circuit with adjustable gain and a fully differential, 8-channel, 12-bit A/D system. The categories
  included herein are data conversion, interface, filters,
  instrumentation, video/op amps and miscellaneous
  circuits. Application Note 66, which covers power products
  and circuits from Linear Technology ’s first five years, is
  also available from LTC. ARTICLE INDEX
  Data Conversion . 3
  Fully Differential, 8-Channel, 12-Bit A/D System Using the LTCВ®1390 and LTC1410 . 3
  12-Bit DAC Applications . 5
  LTC1329 Micropower, 8-Bit, Current Output DAC Used for Power Supply Adjustment,
  Trimmer Pot Replacement . 7
  12-Bit Cold Junction Compensated, Temperature Control System with Shutdown . 8 …

Design Notes

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  1.25Msps 12-Bit A/D Converter CutsPower Dissipation and Size &mdash DN104
  PDF, 74 Kb, File published: May 1, 1995
  Extract from the document

  1.25Msps 12-Bit A/D Converter Cuts Power Dissipation and Size
  Design Note 104
  Dave Thomas and Kevin R. Hoskins
  Introduction
  Until now, high speed system designers had to compromise when selecting 1Msps 12-bit A/D converters.
  While hybrids typically had the best performance, they
  were big, power hungry (~1W) and costly (>$100). A
  few manufacturers offered monolithics, but they compromised either AC or DC performance.
  That has now changed. The new LTC В®1410 monolithic
  1.25Msps 12-bit ADC performs better than hybrids with
  the power dissipation, size and cost of monolithics.
  Some of the LTC1410’s key benefits include: 1.25Msps throughput rate
  Fully differential inputs
  60dB CMRR that remains constant to 1MHz
  Low power: 160mW (typ) from В±5V supplies
  “Instant on” NAP and μpower SLEEP shutdown modes
  Small package: 28-pin SO The LTC1410’s features can increase the performance
  and decrease the cost of current data acquisition systems and optimize new applications.
  High Accuracy Conversions: AC or DC
  In Figure 1 the LTC1410 combines a wide bandwidth
  differential sample-and-hold (S/H) with an extremely
  fast successive approximation register (SAR) ADC and
  an on-chip reference. Together they deliver a very high …

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  C-Load TM Op Amps Conquer Instabilities &mdash DN107
  PDF, 495 Kb, File published: Jul 1, 1995
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  C-Load Op Amps Conquer Instabilities – Design Note 107
  Kevin R. Hoskins
  Introduction
  Linear Technology Corporation has taken advantage of
  advances in process technology and circuit innovations
  to create a series of C-Loadв„ў operational amplifiers that
  are tolerant of capacitive loading, including the ultimate,
  amplifiers that remain stable driving any capacitive load.
  This series of amplifiers has a bandwidth that ranges from
  160kHz to 140MHz. These amplifiers are appropriate for
  a wide range of applications from coaxial cable drivers to
  analog-to-digital converter (ADC) input buffer/amplifiers.
  Driving ADCs
  Most contemporary ADCs incorporate a sample-and-hold
  (S/H). A typical S/H circuit is shown in Figure 1. The hold
  capacitor’s (C1) size varies with the ADC’s resolution but
  is generally in the range of 5pF to 20pF, 10pF to 30pF and
  10pF to 50pF for 8-, 10-and 12-bit ADCs, respectively. gracefully and accurately drive capacitive loads, such as
  Linear Technology’s C-Load line of monolithic amplifiers.
  Table 1 lists Linear Technology’s unconditionally stable
  voltage feedback C-Load amplifiers. Table 2 lists other
  voltage feedback C-Load amplifiers that are stable with
  loads up to 10,000pF. …

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  New 14-Bit, 800ksps ADC Upgrades 12-Bit Systems with 81.5dB SINAD, 95dB SFDR &mdash DN159
  PDF, 81 Kb, File published: Jul 5, 1997
  Extract from the document

  New 14-Bit, 800ksps ADC Upgrades 12-Bit Systems
  with 81.5dB SINAD, 95dB SFDR – Design Note 159
  Dave Thomas and Kevin R. Hoskins
  Higher Dynamic Range ADCs
  The new 14-bit, 800ksps LTC В®1419 enhances new communications, spectral analysis, instrumentation and
  data acquisition applications by providing an upgrade
  path to users of 12-bit converters. It provides outstanding 81.5dB SINAD (signal-to-noise and distortion
  ratio) and 95dB SFDR (spurious-free dynamic range)
  for frequency-domain applications, and excellent DNL
  with no missing codes performance for time-domain
  applications.
  LTC1419 Features
  в– 
  Complete 14-Bit, 800ksps ADC
  в– 
  В±1LSB DNL and В±1.25LSB INL (Max)
  в– 
  81.5dB SINAD and 95dB SFDR
  в– 
  Low Power: 150mW on В± 5V Supplies
  в– 
  Nap/Sleep Power-Down Modes
  в–  …

Model Line

Manufacturer's Classification

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