Datasheet Summary
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Low Power PLL Tuning Circuits for 3-Wire Bus
The MC44827/27B are tuning circuits for TV and VCR tuner applications. They contain on one chip all the functions required for PLL control of a VCO. The integrated circuits also contain a high frequency prescaler and thus can handle frequencies up to 1.3 GHz. The MC44827 has programmable 512/1024 reference divider while the MC44827B has a fixed reference divider of 1024. The MC44827/27B offer the same Features as MC44817/17B but has improved sensitivity performance and reduced power dissipation. The low frequency preamplifier has been removed and the operational amplifier pull- up resistor has been increased to...