Справочник Пользователя для Silicon Laboratories SI5368
S i 5 3 x x - R M
126
Rev. 0.5
A
PPENDIX
C—T
YPICAL
P
HASE
N
OISE
P
LOTS
Introduction
The following are some typical phase noise plots. The clock input source is a Rohde and Schwarz model SML03
RF Generator. Except as noted, the phase noise analysis equipment is the Agilent E5052B. Also (except as noted),
the Any-Frequency part was an Si5326 operating at 3.3 V with an ac-coupled differential PECL output and an ac-
coupled differential sine wave input from the RF generator at 0 dBm. Note that, as with any PLL, the output jitter
that is below the loop bandwidth of the Any-Frequency device is caused by the jitter of the input clock, not the Any-
Frequency Precision Clock. Except as noted, the loop bandwidths were 60 Hz to 100 Hz.
RF Generator. Except as noted, the phase noise analysis equipment is the Agilent E5052B. Also (except as noted),
the Any-Frequency part was an Si5326 operating at 3.3 V with an ac-coupled differential PECL output and an ac-
coupled differential sine wave input from the RF generator at 0 dBm. Note that, as with any PLL, the output jitter
that is below the loop bandwidth of the Any-Frequency device is caused by the jitter of the input clock, not the Any-
Frequency Precision Clock. Except as noted, the loop bandwidths were 60 Hz to 100 Hz.
Figure 65. 155.52 MHz In; 622.08 MHz Out