$mathbf {G_{m}}$ /CP

A −248-dB FOMref CS-Fusion PLL Architecture Combining the Advantages of PFD-CP PLLs and Sampling PLLs in a Single Loop

A −248-dB FOMref CS-Fusion PLL Architecture Combining the Advantages of PFD-CP PLLs and Sampling PLLs in a Single Loop 150 150

Abstract:

This article introduces a CP-sampling (CS)-fusion PLL architecture that combines the advantages of PFD-CP PLLs (robust and speedy locking) and sampling PLLs (low jitter/power) in a single loop. The PFD sends pulsewidth-modulation (PWM) pulses to a merged $mathbf {G_{m}}$ /CP (GCP) block so that the phase error …

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