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Корпус / Упаковка / Маркировка

Параметры

Экологический статус

Другие варианты исполнения

LT1490A LT1490A

Application Notes

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  Linear Technology Magazine Circuit Collection, Volume V: Data Conversion, Interface and Signal Conditioning Products &mdash AN87
  PDF, 1.5 Мб, Файл опубликован: 1 ноя 2000
  Application Note 87 is the fifth in a series that excerpts useful circuits from Linear Technology magazine. Data conversion, interface and signal conditioning circuits from issue VI:1 (February 1996) through issue VIII:4 (November 1998) are featured. Like its predecessor, AN67, this Application Note includes circuits for high speed video, interface and hot swap circuits, active RC and switched capacitor filter circuitry and a variety of data conversion and instrumentation circuits. All circuits are conveniently indexed by type.
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  Application Note 87
  November 2000 Linear Technology Magazine Circuit Collection, Volume V
  Data Conversion, Interface and Signal Conditioning Products
  Richard Markell, Editor
  INTRODUCTION
  Application Note 87 is the fifth in a series that excerpts
  useful circuits from Linear Technology magazine to preserve them for posterity. This application note highlights
  data conversion, interface and signal conditioning circuits
  from issue VI:1 (February 1996) through issue VIII:4
  (November 1998). Like its predecessor, AN67, this Application Note includes circuits for high speed video, interface and hot swap circuits, active RC and switched capacitor filter circuitry and a variety of data conversion and instrumentation circuits. There are also several circuits
  that cannot be so neatly categorized. So, without further
  ado, I’ll let the authors describe their circuits.
  Note: Article Titles appear in this application note exactly
  as they originally appeared in Linear Technology magazine. This may result in some inconsistency in the usage
  of terminology. TABLE OF CONTENTS
  Introduction . 1
  DATA CONVERTERS
  The LTC®1446 and LTC1446L: World’s First Dual 12-Bit DACs in SO-8 Packages . 3
  Multichannel A/D Uses a Single Antialiasing Filter. 4
  LTC1454/54L and LTC1458/58L: Dual and Quad 12-Bit, Rail-to-Rail, Micropower DACs . 5
  Micropower ADC and DAC in SO-8 Give PC 12-Bit Analog Interface . 7
  The LTC1594 and LTC1598: Micropower 4-and 8-Channel 12-Bit ADCs . 10
  MUX the LTC1419 Without Software . 13 …

Design Notes

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  Telephone Ring-Tone Generation &mdash DN134
  PDF, 80 Кб, Файл опубликован: 1 авг 1996
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  Telephone Ring-Tone Generation – Design Note 134
  Dale Eagar
  Requirements
  When your telephone rings, exactly what is the phone
  company doing? This question comes up frequently, as
  it seems everyone is becoming a telephone company.
  Deregulation opens many new opportunities, but if you
  want to be the phone company you have to ring bells.
  An Open-Architecture Ring-Tone Generator
  Here is a design that you can own, tailor to your specific
  needs, layout on your circuit board and put on your bill
  of materials. Finally, you will be in control of the black
  magic (and high voltages) of ring-tone generation.
  Not Your Standard Bench Supply
  Ring-tone generation requires not one but two high
  voltages, 60VDC and – 180VDC (this arises from the
  need to put 87VRMS on –48VDC). Figure 1 details the
  switching power supply that delivers the volts needed
  to run the ring-tone circuit. This switcher can be powered from any voltage from 5V to 30V and shuts down
  when not in use. Figure 2 is the build diagram of the
  transformer used in the switching power supply.
  60V
  MUR160 = PRIMARY GROUND T1 2 = SECONDARY GROUND + …

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  Interfacing to Apple LocalTalk В® Networks &mdash DN85
  PDF, 131 Кб, Файл опубликован: 15 сен 1994
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  advertisement Interfacing to Apple LocalTalk В® Networks
  Design Note 85
  Robert Reay
  external –5V supply. The bipolar chips also draw large
  supply currents, making them undesirable for batterypowered applications. A better solution is to use the
  LTC1323CS24 which provides a complete low power
  serial I/O interface while generating it’s own –5V supply
  as shown in Figure 1. LocalTalk Overview
  Of the many connection technologies available for linking an AppleTalk В® network, LocalTalk is one of the most
  common because it is designed to connect local work
  groups using inexpensive and easily configurable plugand-play cabling. LocalTalk is laid out in a bus topology
  with all devices joined in a line with no circular connections. LocalTalk conforms to the EIA RS422 electrical
  standard to provide a balanced differential voltage signal transmitting at 230.4kbs over a maximum distance
  of 300 meters with up to 32 devices connected to a
  twisted-pair network. The balanced configuration provides good isolation from ground noise currents and is
  not susceptible to fluctuating potentials between system grounds or common-mode electromagnetic interference (EMI). The LTC1323 uses the differential driver output stage of
  Figure 2. The driver swings between ground and VCC
  when a differential LocalTalk load is connected between
  TXD + and TXD – while meeting the EIA RS422 differential voltage swing requirement of ±2.0V into 100Ω.
  When a single-ended load is connected from TXD + to
  ground or TXD – to ground, the driver will swing between VEE and VCC while meeting the EIA 562 voltage
  swing requirement of ±3.7V into 3kΩ. Because the
  differential LocalTalk load requires a large current drive, …

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Классификация производителя

• Signal Conditioning > Amplifiers > Operational Amplifiers (Op Amps) > Low Power Amplifiers (Is < 1mA/amp) | Precision Amplifiers (Vos | High Voltage Amplifiers (>12V) | Rail-to-Rail Amplifiers
• Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Amplifiers

Варианты написания:

LT1491AISTRPBF, LT1491AIS TRPBF