PLL Tuned UHF and VHF Audio/Video High Integration Modulator

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freescaleFreescale Semiconductor, Inc

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PLL Tuned UHF and VHF Audio/Video High Integration Modulator

Overview The MC44BS374CA is a multi-standard, PAL/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 \n\t•Integrated on-chip programmable UHF oscillator\n\t•No external varicaps diodes/inductor or tuned components\n\t•Extremely low external components count\n\t•Channel 21-69 UHF operation\n\t•VHF range possible by internal dividers (30 MHz to 450 MHz)\n\t•Boosted TVout level (82 dBuV typical)\n\t•H;

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Multi-Standard Audio/Video Modulator

Overview The MC44BS374T1 and MC44BS374T1A are phase-locked loop (PLL) tuned, ultra highfrequency (UHF) and very high frequency (VHF), audio/video (A/V), high integrationmodulator, integrated circuits (IC). These devices are intended for use in VCRs,games, and set-top box systems, and both use \"T\" \n•MC44BS374T1 available in channel 36 startup frequency (591.25 MHz) \n•MC44BS374T1A available in channel 71 startup frequency (871.25 MHz) \n•No external varicaps diodes/inductor or tuned components\n•Channel 21-69 UHF operation\n•VHF range possible by internal dividers (30 MHz to 450 MHz)\n•Integ;

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