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    參數(shù)資料
    型號: TDA8295HN/C2
    廠商: NXP SEMICONDUCTORS
    元件分類: 接收器
    英文描述: AM/FM, AUDIO/VIDEO DEMODULATOR, PQCC40
    封裝: 6 X 6 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT618-1, HVQFN-40
    文件頁數(shù): 22/83頁
    文件大?。?/td> 3440K
    代理商: TDA8295HN/C2
    TDA8295_C2_2
    NXP B.V. 2009. All rights reserved.
    Product data sheet
    Rev. 02 — 27 November 2009
    29 of 83
    NXP Semiconductors
    TDA8295
    Digital global standard low IF demodulator for analog TV and FM radio
    9.3.6 Filter settings
    Table 23.
    FILTERS_1 register (address 0Fh) bit description
    Legend: * = default value.
    Bit
    Symbol
    Access Value
    Description
    7 to 5 VID_FILT[2:0]
    R/W
    video low-pass filter to remove all unwanted
    frequencies (own sound carriers) above video
    content (see Figure 7)
    001*
    video low-pass filter 4 MHz
    010
    video low-pass filter 5 MHz
    100
    video low-pass filter off
    4 to 0 NOTCH_FILT[4:0]
    R/W
    The notch filter attenuates the adjacent sound
    carrier N
    1, which is located differently
    dependent on channel spacing 6 MHz, 7 MHz or
    8 MHz (see Figure 8).
    0 0001*
    notch filter for 6 MHz channel spacing
    (M/N standard)
    0 0010
    notch filter for 7 MHz channel spacing
    (B standard)
    0 0100
    notch filter for 8 MHz channel spacing (G/H,
    D/K, I, L and L-accent standard)
    1 0000
    notch/low-pass filter off
    (1) M/N standard.
    (2) All other standards.
    Fig 7.
    Video low-pass filters for sound carrier suppression
    f (MHz)
    07
    6
    24
    5
    13
    001aah358
    30
    50
    10
    αresp(f)
    (dB)
    70
    (1)
    (2)
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