STA538 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STA538' PDF : 59 Pages View PDF
PLL
5
PLL
STA538
Figure 4 shows the main components of the PLL.
Figure 4. PLL block diagram
CLKIN
IDF
Input frequency
divider
INFIN
FBCLK
Lock detect
INFOUT
REFOUT
Buffer
INFIN
Phase
frequency
divider
(PFD)
FBCLK
Charge
pump and
loop filter
VCO
LOCKP
FILT
LF
VCONT
Loop frequency divider
FVCO
STRB
STRB_
BYPASS
FRAC_CTRL
Fractional controller
Output
frequency
PHI
divider
DITHER_DISABLE
FRAC_INPUT
NDIV
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