Cirrus-logic CS2100-CP Manuale Utente Scaricare il pdf (Pagina 12)

CS2100-CP

12 DS840F2

Figure 8. Hybrid Analog-Digital PLL

N

Digital Filter

Frequency

Comparator for

Frac-N Generation

Frequency Reference

Clock

Delta-Sigma Fractional-N Frequency Synthesizer

Digital PLL and Fractional-N Logic

Output to Input Ratio for Hybrid mode

Fractional-N

Divider

Timing Reference

Clock

PLL Output

Voltage Controlled

Oscillator

Internal

Loop Filter

Phase

Comparator

Delta-Sigma

Modulator

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