STC5230_15 Datasheet, PDF (56/64 Pages) Connor-Winfield Corporation – Line Card Clock

STC5230
Synchronous Clock for SETS
Data Sheet
Noise Transfer Functions
The user may write to T(0/4)_Bandwidth registers to set the loop bandwidth of the DPLL of each timing gener-
ator. The noise transfer function of the DPLL filter is determined by the loop bandwidth. Figure 12 shows the
noise transfer functions as the loop bandwidths vary from 0.1Hz to 103Hz.
20 dB
0 dB
-20 dB
-40 dB
-60 dB
0.10 Hz
0.21 Hz
0.42 Hz
0.84 Hz
1.7 Hz
3.4 Hz
6.7 Hz
13 Hz
27 Hz
52 Hz
103 Hz
-3dB
-80 dB
10 mHz
100 mHz
1 Hz
10 Hz
Noise Frequency
100 Hz
Figure 12: Noise Transfer Functions
1 kHz
10 kHz
Page 56 of 64 TM102 Rev: 3.0
© Copyright the Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Date: September 14, 2011