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LF2242 データシート

部品番号コンポーネント説明メーカー
LF2242 12/16-bit Half-Band Interpolating/Decimating Digital Filter Logic-Devices
LOGIC Devices Logic-Devices
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DESCRIPTION
The LF2242 is a linear-phase, half band (low pass) interpolating/decimating digital filter that, unlike intricate analog filters, requires no tuning. The LF2242 can also significantly reduce the complexity of traditional analog anti-aliasing prefilters without compromising the signal bandwidth or attenuation. This can be achieved by using the LF2242 as a decimating post-filter with an A/D converter and by sampling the signal at twice the rate needed. Likewise, by using the LF2242 as an interpolating pre-filter with a D/A converter, the corresponding analog reconstruction post-filter circuitry can be simplified.

FEATURES
❑ 40 MHz Clock Rate
❑ Passband (0 to 0.22fS) Ripple: ±0.02 dB
❑ Stopband (0.28fS to 0.5fS) Rejection: 59.4 dB
❑ User-Selectable 2:1 Decimation or 1:2 Interpolation
❑ 12-bit Two’s Complement Input and 16-bit Output with User-Selectable Rounding, 8- to 16-Bits
❑ User-Selectable Two’s Complement or Inverted Offset Binary Output Formats
❑ Three-State Outputs
❑ Replaces TRW/ Raytheon/ Fairchild TMC2242
❑ Package Styles Available:
    • 44-pin PLCC, J-Lead
    • 44-pin PQFP

 

LF2242 に関連する他のメーカーを検索

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