11640-809 Просмотр технического описания (PDF) - AMI Semiconductor

Номер в каталоге

Компоненты Описание

производитель

11640-809

Dual PLL Clock Generator IC

AMI Semiconductor 

     X  T

)6

'XDO 3// &ORFN *HQHUDWRU ,&

October 1999

1.0 Features

• Dual phase-locked loop (PLL) device with three out-

put clock frequencies

• 3.3V supply voltage

• Small circuit board footprint (8-pin 0.150″ SOIC)

• Custom frequency selections available - contact your

local AMI Sales Representative for more information

Figure 1: Pin Configuration

CLKA 1

VSS 2

XIN 3

XOUT 4

8 SEL

7 VDD

6 CLKC

5 CLKB

8-pin (0.150″) SOIC

2.0 Description

The FS6285 is a monolithic CMOS clock generator IC

designed to minimize cost and component count in digital

video/audio systems.

Two high-resolution phase-locked loops generate two

output clocks (CLKA and CLKB) through an array of post-

dividers. All frequencies are ratiometrically derived from

the crystal oscillator frequency. The locking of all the out-

put frequencies together can eliminate unpredictable ar-

tifacts in video systems and reduce electromagnetic in-

terference (EMI) due to frequency harmonic stacking.

Table 1: Crystal / Output Frequencies

DEVICE fXIN (MHz) CLKA (MHz) CLKB (MHz) CLKC (MHz)

66.004(SEL=VSS)

FS6285-03

24.576

(fXIN* 188 / 70)

83.002(SEL=VDD)

(fXIN* 179 / 53)

NOTE: Contact AMI for custom PLL frequencies

14.3182

(fXIN* 67 / 115)

24.576

(fXIN)

Figure 2: Block Diagram

XIN

XOUT

CRYSTAL

OSC.

SEL

CLKA

PLL

DIVIDER

ARRAY

CLKB

PLL

CLKC

FS6285

10.1.99

,62

Share Link: