SM8707 Datasheet, PDF (1/20 Pages) Nippon Precision Circuits Inc – Clock Generator with Dual PLLs

SM8707 series
Clock Generator with Dual PLLs
OVERVIEW
The SM8707 series are dual-PLL clock generator ICs, using a 27MHz master clock, that generate independent
audio clock, video clock, and signal processor clock outputs needed in DVD player/recorder applications. Each
PLL loop filter and crystal oscillator circuit are built-in and require no external components, resulting in high-
precision clocks. The lineup includes devices that support both 44.1/48kHz audio sampling frequencies (fs),
switchable using a control pin. The sampling frequency can be switched during operation without generating
any output spike noise.
FEATURES
I Supply voltage: 3.0 to 3.6V
I PLL loop filter built-in
I Low current consumption: 35mA typ.
I Crystal oscillator circuit built-in
(V_DD = 3.3V, all outputs with no load)
I 27MHz master clock
I Sampling frequency fs: 44.1/48kHz
I 16-pin VSOP package (Pb free)
(internal PLL reference clock)
I Generated clocks (Refer to “Output Frequency Listing” on page 18 for details.)
Video system
output
Audio system
output
SM8707D
27.0000MHz
512fs
768fs¹
384fs¹
Signal processor 16.9344MHz
system output 33.8688MHz
SM8707E
27.0000MHz
512fs
33.8688MHz
SM8707F
27.0000MHz
768fs
16.9344MHz
33.8688MHz
SM8707G
27.0000MHz
−
33.8688MHz
SM8707H
27.0000MHz
512fs
16.9344MHz
33.8688MHz
36.8640MHz
1. 384fs (fs = 44.1kHz)/768fs (fs = 48kHz)
I Low jitter output (1-sigma output load capacitance typical values)
SM8707K
−
768fs
18.4320MHz
24.5760MHz
33.8688MHz
36.8640MHz
SM8707L
27.0000MHz
768fs
24.5760MHz
33.8688MHz
Video system
output
Audio and Signal
processor
system output
SM8707D
20ps
70ps
SM8707E
20ps
55ps
SM8707F
20ps
40ps
SM8707G
20ps
40ps
SM8707H
20ps
70ps
SM8707K
−
60ps
SM8707L
20ps
60ps
APPLICATIONS
I DVD players/recorders
I DVD car navigation system
ORDERING INFORMATION
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 0.07g
Device
SM8707DV
SM8707EV
SM8707FV
SM8707GV
SM8707HV
SM8707KV
SM8707LV
Package
16-pin VSOP
0.275typ
5.1 0.2
0.65
0.10
+ 0.1
0.22− 0.05
0.12 M
+
0.15 ^-
0₀._.1₀₅
0 to 10
0.5 0.2
NIPPON PRECISION CIRCUITS INC.—1