STA33013TR 데이터 시트보기 (PDF) - STMicroelectronics

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STA33013TR

2.0 digital audio processor with FFX digital modulator and analog and digital inputs

STMicroelectronics 

PLL

6

PLL

STA330

Figure 7 shows the main components of the PLL.

Figure 7. PLL block diagram

CLKIN

IDF

INFOUT

REFOUT

Input frequency

divider

INFIN

FBCLK

Lock detect

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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