SM8703AV
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
s
PINOUT
(Top View)
s
s
s
s
s
s
27 MHz master clock (internal PLL reference
clock)
Generated clocks
• 27 MHz output
• 33.8688 MHz output
• 384fs output
• 512fs output
• 768fs output
Sampling frequency fs
• 44.1/48 kHz
Output disable function
Low jitter output: 100 ps (typ, 15pF load)
Supply voltage: 3.3 V
24-pin VSOP package
VDD
VSS
MO1
MCK
MLEN
VDDA
VSSA
XTI
XTO
RSV
RSV
SO1
1
24
12
13
MO2
FSEL/MDT
SO5
RSV
SO2
VDD1
VSS1
RSV
SO3
SO4
VDD2
VSS2
SM8703AV
APPLICATIONS
s
s
s
DVD players
Set top box
MPEG2 system
PACKAGE DIMENSIONS
(Unit: mm)
7.8
±
0.1
ORDERING INFORMATION
D e vice
S M 8 7 0 3 AV
P ackag e
24-pin V S O P
+
0.05
0.15
−
0.02
5.6
±
0.1
7.6
±
0.2
+
0.2
1.25
−
0.1
0 to 10
0.65
+
0.1
0.22
−
0.05
0.1
0.13
M
NIPPON PRECISION CIRCUITS—1
0.1
±
0.1
0.5
±
0.2
NPC [ NIPPON PRECISION CIRCUITS INC ]
