AN2638 Freescale Semiconductor / Motorola, AN2638 Datasheet - Page 6

• Manufacturer Part Number: AN2638
• Description: Effects of Clock Jitter on the MPC8260 (HiP3 and HiP4)
• Manufacturer: Freescale Semiconductor / Motorola

Phase Lock Loop (PLL)
Phase Lock Loop (PLL)
The addition of R
3.2 Frequency Response
Figure 8 shows a frequency response compression graph of filter configuration. This compression shows
that the combination of C
thus allowing the PLL operation less susceptible to jitter.
6
Vin
xfc
, modifies the transfer function as follows:
Effects of Clock Jitter on the MPC8260 (HiP3 and HiP4)
xfc
Rint
Freescale Semiconductor, Inc.
+ R
Figure 8. Frequency Response Comparison
For More Information On This Product,
xfc
Figure 7. PLL loop filter with R
demonstrated the best case scenario for wider frequency response area,
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Cint
xfc
Cxfc
Rxfc
R
With Out C
XFC +
C
XFC
C
XFC
XFC
Vout
MOTOROLA