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  Precision, Matched, Baseband Filter ICs Outperform Discrete Implementations &mdash DN476
  PDF, 100 Kb, Datei veröffentlicht: Feb 10, 2010
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  Precision, Matched, Baseband Filter ICs Outperform Discrete
  Implementations – Design Note 476
  Philip Karantzalis
  Introduction
  In digital communication systems, baseband signals must
  be band-limited in the transmitter or the receiver. Although
  the bulk of baseband signal shaping and analysis is accomplished using digital signal processing (DSP), analog
  п¬Ѓltering is used in a number of places along the signal
  chain. For instance analog п¬Ѓlters reduce the imaging of a
  digital-to-analog converter (DAC), п¬Ѓlter out the high frequency noise of an RF demodulator or reduce the aliasing
  inputs of an analog-to-digital converter (ADC).
  Typically, 3G communication systems (CDMA, GSM,
  UMTS or WiMax) feature a baseband channel bandwidth
  of 1.25MHz to over 20MHz. In this frequency range, discrete analog filters—those constructed with high speed
  op amps, resistors and capacitors—are sensitive to PCB
  layout parasitics, component tolerances and mismatches.
  The pitfalls of using discrete components can be avoided
  by using integrated, pin-configurable, precision analog
  п¬Ѓlter ICs, such as the LTC6601-1/-2 and the LTC6605-7/
  -10/-14. The LTC6601-x is a single 2nd order lowpass п¬Ѓlter
  and the LTC6605-x is a dual, matched п¬Ѓlter.
  The LTC6601-x Lowpass Filter
  Figure 1 shows a block diagram of an LTC6601-x and the …

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Herstellerklassifikation

• Signal Conditioning > Amplifiers > Differential Amplifiers > Fully Differential Amplifiers
• Signal Conditioning > Filters > Wideband Active Filters

Andere Namen:

LTC6605CDJC-7PBF, LTC6605CDJC-7 PBF, LTC6605CDJC7#PBF, LTC6605CDJC 7#PBF