Figure 6. hybrid analog-digital pll, Figure 6, Cs2300-otp – Cirrus Logic CS2300-OTP User Manual

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CS2300-OTP

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DS844F2

Figure 6. 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

PLL Output

Voltage Controlled

Oscillator

Internal

Loop Filter

Phase

Comparator

Delta-Sigma

Modulator

LCO