SM8703AV

NIPPON PRECISION CIRCUITS—1

NIPPON PRECISION CIRCUITS INC.

Clock Generator for MPEG2 System

OVERVIEW

The SM8703AV is a 27 MHz master clock, 5-system output clock generator for MPEG2 system. It has 2 built-

in PLLs that, with the addition of a single crystal oscillator element, can generate 384fs, 512fs and 768fs

clocks which are necessary for MPEG2 system, plus independent fixed-frequency 27 MHz and 33.8688 MHz

output clocks. Each output can stop unused output by using disable function, therefore, unnecessary radiation

can be suppressed. Also, visual and audio synchronous is not disrupted since each output frequency is kept in

the normal ratio. Supported sampling frequencies (fs) include 44.1 or 48 kHz.

FEATURES

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27 MHz master clock (internal PLL reference

clock)

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Generated clocks

• 27 MHz output

• 33.8688 MHz output

• 384fs output

• 512fs output

• 768fs output

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Sampling frequency fs

• 44.1/48 kHz

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Output disable function

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Low jitter output: 100 ps (typ, 15pF load)

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Supply voltage: 3.3 V

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24-pin VSOP package

APPLICATIONS

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DVD players

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Set top box

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MPEG2 system

ORDERING INFORMATION

PINOUT

(Top View)

PACKAGE DIMENSIONS

(Unit: mm)

D e vice

P a ck ag e

SM8703AV

24-pin VSOP

VDD

VSS

MO1

MCK

MLEN

VDDA

VSSA

MO2

FSEL/MDT

SO5

RSV

SO2

VDD1

VSS1

XTI

RSV

XTO

RSV

SO3

SO4

1

12

13

24

RSV

SO1

VDD2

VSS2

7.8

± 0.1

0.65

0.22

− 0.05

+ 0.1

0.1

0.15

− 0.02

+ 0.05

0 to 10