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Otras opciones

LTC1068-200 LTC1068-25 LTC1068-50

Artículos

• Descargar
  Clock-Tunable, High Accuracy, Quad 2nd Order, Analog Filter Building Blocks &mdash LT Journal
  PDF, 239 Kb, Archivo publicado: agosto 1, 1998
  Extracto del documento

  DESIGN FEATURES Clock-Tunable, High Accuracy,
  Quad 2nd Order, Analog Filter
  Building Blocks
  by Philip Karantzalis
  LTC1068-200 Ultralow
  The LTC1068 product family consists ware for Windows . The internal sam-Frequency Linear-Phase
  of four monolithic, clock-tunable filter pling rate of all the LTC1068 devices Lowpass Filter
  Introduction В® is twice the clock frequency. This
  allows the frequency of input signals
  to approach twice the clock frequency
  before aliasing occurs. Maximum
  clock frequency for LTC1068-200,
  LTC1068 and LTC1068-25 is 6MHz
  with В±5V supplies; that for the
  LTC1068-50 is 2MHz with a single 5V
  supply. For low power filter applications, the LTC1068-50 power supply
  current is 4.5mA with a single 5V
  supply and 2.5mA with a single 3V
  supply. The LTC1068 products are
  available in a 28-pin SSOP surface
  mount package. The LTC1068 (the
  100:1 part) is also available in a 24pin DIP package. The following four
  circuits are typical examples of …

• Descargar
  High Clock-to-Center Frequency Ratio LTC1068-200 Extends Capabilities of Switched Capacitor Highpass Filter &mdash LT Journal
  PDF, 214 Kb, Archivo publicado: feb 1, 1998
  Extracto del documento

  DESIGN IDEAS High Clock-to-Center Frequency Ratio
  LTC1068-200 Extends Capabilities
  of Switched Capacitor Highpass Filter
  by Frank Cox continued on page 33 –10dB 10dB/DIV input signal too much you will also
  limit the passband of the filter, and
  hence its usefulness.
  What makes this filter different is
  the 200:1 clock-to-center frequency
  ratio (CCFR) and the internal sampling scheme of the LTC1068-200.
  Figure 2a shows the amplitude
  response of the filter plotted against
  frequency from 100Hz to 10kHz. For
  comparison, Figure 2b shows the
  same filter built with an LTC1068-25.
  This is a 25:1 CCFR part. The 200:1
  CCFR filter delivers almost 30dB more
  ultimate attenuation in the stopband.
  A standard amplitude vs frequency
  plot of a highpass filter can be misleading because it masks some of the
  aforementioned spurious signals
  introduced into the passband. Figure
  3a is a spectrum plot of the 200:1
  filter with a single 10kHz tone on the …

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Clasificación del fabricante

• Signal Conditioning > Filters > Filter Building Blocks

Otros nombres:

LTC1068IGTRPBF, LTC1068IG TRPBF