STA538B 查看數據表（PDF） - STMicroelectronics

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STA538B

2 x 1.3 W class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX

STMicroelectronics 

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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