ICS9118-03 Datasheet, PDF (1/5 Pages) Integrated Circuit Systems – Frequency Generator for Digital Video Systems

Integrated
Circuit
Systems, Inc.
ICS9118-03
Obsolete _ICS9118-04
Frequency Generator for Digital Video Systems
General Description
The ICS9118-03 and ICS9118-04 are low-cost, high-
perform-ance clock generators designed to support digital
video systems. 1.8MHz UART and AUDIO clocks are
generated from the recovered 27MHz reference signal.
The -03 supports 256x audio oversampling, and the -04
supports 384x audio oversampling.
The audio clock is synthesized from 27 MHz using a high
accuracy, low jitter PLL to meet the synchronization and
-96dB signal-to-noise ratios required by 16-bit DSP systems.
Fast output clock edge rates minimize board-induced jitter.
Features
• Genreates AUDIO codec and UART clocks
synchronized to the 27MHz recovered video clock
• Selectable AUDIO clock supports 256x and 384x
over-sampling of 16.00, 22.05, 24.00, 32.00, 44.10
and 48.00 kHz
• 80ps one sigma jitter maintains 16 bit performance
• Output rise/fall times less than 1.5nS
• On chip loop filter components
• 3.0V - 5.5V supply range
• 8-pin, 150-mil SOIC package
Pin Configuration
8-Pin SOIC
ICS9118-04 Obsolete
Block Diagram
Applications
• Specifically designed to support the high
performance clocking requirements of digital video
set-top and multi-media systems
Functionality
VDD=3.0-5.5V, TEMP=0-70°
REF
(MHz)
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
FS
[2:0]
AUDIO
03
(MHz)
000 Tristate
001 256*16.00
010 256*22.05
011 256*24.00
100 256*32.00
101 256*44.10
110 256*48.00
111
Low
AUDIO
04
(MHz)
Tristate
384*16.00
384*22.05
384*24.00
384*32.00
384*44.10
384*48.00
Low
UART
(MHz)
Tristate
1.8620
1.8620
1.8620
1.8620
1.8620
1.8620
Low
9118-03 9118-04 RevB 7/28/99
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.