ML145156 interfaces equivalent, parallel-input pll frequency synthesizer interfaces.
consist of a reference oscillator, selectable
–reference divider, digital
–phase detector, and 14
–bit programmable divide
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OSC
÷R
CONTROL LOGIC
φ
.
INPUT PINS f in Frequency Input (Pin 1) Input to the ÷N portion of the synthesizer. f in is typically derived from loop VCO and is AC coupled into the device. For larger amplitude signals (standard CMOS logic levels) DC coupling may be used. RA0
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