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MC44BS373CAEFR2  PDF 規(guī)格書(shū)
MC44BS373CAEFR2 PDF 規(guī)格書(shū)
產(chǎn)品價(jià)格:¥1
上架日期:2011-09-01 14:35:20
產(chǎn)地:TAIWAN
發(fā)貨地:深圳
供應(yīng)數(shù)量:不限
最少起訂:1PCS
瀏覽量:699
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詳細(xì)說(shuō)明
    1 Features
    The MC44BS373CA is a multi-standard, PAL/SECAM/NTSC modulator.
    The channel is set by an on-chip high-speed I2C-compatible bus receiver. A phase-locked loop (PLL) tunes
    the modulator over the full UHF range.
    The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4.5-, 5.5-, 6.0-,
    and 6.5-MHz subcarrier frequencies. These frequencies are selectable by bus.
    The modulation standard can be chosen using a control bit that selects between positive and negative
    modulation.
    The picture-to-sound ratio may be adjusted using the bus. In addition, an on-chip video test pattern generator
    can be switched on with a 1-kHz audio test signal.
    The MC44BS373CA also has the following features:
    • Integrated on-chip programmable UHF oscillator
    • No external varicaps diodes/inductor or tuned components
    • Extremely low external component count
    • Channel 21–69 UHF operation
    • VHF range possible by internal dividers (30–450 MHz)
    • Boosted TVOUT level (82 dBμV typical)
    • High-speed read and write I2C bus compatible (800 kHz)
    • I2C address selectable by pin (four choices) using external resistor (available only in QFN20
    package)
    • I2C bus 5- and 3.3-V compatible
    • Fixed video modulation depth (93% typical in system L and 82% typical in the other standards)
    • Peak white clip disabled by bus
    • Programmable picture/sound carrier ratio (12 and 16 dB)
    • Integrated on-chip programmable sound subcarrier oscillator (4.5, 5.5, 6.0 and 6.5 MHz)—no
    external varicaps
    • Programmable sound reference frequency (31.25 and 62.5 kHz)
    • Direct RF sound modulator b (FM and AM modulator bypassed) for NICAM or stereo sound
    applications (available only in QFN20 package)
    • On-chip video test pattern generator with sound test signal (1 kHz)
    • Low-power programmable modulator standby mode
    • Transient output inhibit during PLL lock-up at power-on
    • Logical output port controlled by bus
    • ESD protection, minimum 4 KV
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    企業(yè)信息
    深圳市南天星電子科技有限公司
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