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TSA5521T/C5

  

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TSA5521T/C5 [1.3 GHz universal bus-controlled TV synthesizer; 3-wire ]

other parts : TSA5520  TSA5520M  TSA5520M/C3  TSA5520M/C3/R1  TSA5520M/C4  TSA5520M/C5  TSA5520T 

Philips
Philips Electronics

The device is a single-chip PLL frequency synthesizer designed for TV and VCR tuning systems.

The circuit consists of a divide-by-eight prescaler with its own preamplifier, a 15-bit programmable divider, a crystal oscillator and its programmable reference divider and a phase/frequency detector combined with a charge-pump which drives the tuning amplifier and the 33 V output.

Four high-current PNP band switch buffers are provided for band switching. Two PNP buffers can be switched on simultaneously. The sum of the collector currents is limited to 50 mA.

 

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