Phase-locked loop (PLL) frequency synthesizer
Fujitsu
Fujitsu PLL Frequency Synthesizer IC's are built in dual modulus prescaler is adaptable from 50MHz to 3GHz and it can make up low noise small serial input Phase Locked Loop (PLL) frequency enabling pulse swallowing operation.
Function
* Built-in dual modulus prescaler correspond wide frequency from 50MHz to 3GHz
Prescaler divide ratio :8/16/32/64/128(depends on each product)
* Built-in direct power saving function
* Serial input programmable reference counter, swallow counter and programmable counter
* Built-in high-speed tuning, low-noise phase comparator, constant current charge pump circuit
* On-chip phase control for phase comparator
* Built-in digital locking detector circuit to detect PLL locking and unlocking
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