sta538 STMicroelectronics, sta538 Datasheet - Page 18

• Manufacturer Part Number: sta538
• Description: 2 X 1.3 W Class-d Amplifier With Analog Or Digital Input 2.0 Multichannel Digital Audio Processor With Ffx
• Manufacturer: STMicroelectronics

PLL
5
Figure 4.
18/59
CLKIN
IDF
INFOUT
REFOUT
STRB
STRB_
BYPASS
FRAC_CTRL
DITHER_DISABLE
PLL
Figure 4
PLL block diagram
FRAC_INPUT
shows the main components of the PLL.
Input frequency
Buffer
divider
FBCLK
Fractional controller
INFIN
Loop frequency divider
NDIV
frequency
divider
Phase
(PFD)
INFIN
FBCLK
pump and
loop filter
Charge
Lock detect
frequency
Output
divider
VCO
FVCO
VCONT
LOCKP
LF
FILT
PHI
STA538