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ADF4002,pdf datasheet (Phase D

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The ADF4002 frequency synthesizer is used to implement local oscillators in the upconversion and downconversion secTIons of wireless receivers and transmitters. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, a programmable reference divider, and programmable N divider. The 14-bit reference counter (R counter) allows selectable REFIN frequencies at the PFD input. A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO). In addiTIon, by programming R and N to 1, the part can be used as a standalone PFD and charge pump.
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