ICS650-22
MDS 650-22 D 1 Revision 051004
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
PVR and STB Clock Source
Description
The ICS650-22 is a low-cost, low-jitter,
high-performance clock synthesizer for personal video
recorders (PVR) and set-top box (STB) applications.
Using analog Phase-Locked Loop (PLL) techniques,
the device accepts a 27 MHz crystal input to produce
multiple clocks for personal video recorder
applications.
Features
• Packaged in 20-pin narrow SSOP (QSOP)
• Available in Pb (lead) free package
• 27 MHz fundamental crystal or clock input
• Zero ppm synthesis error in all clocks
• Low skew 33.33 MHz clock outputs
• Output enable controls all outputs
• Full CMOS output swing with 25 mA output drive
capability at TTL levels
• Advanced, low-power, sub-micron CMOS process
• 3.3 V +10% operating voltage
Block Diagram
Crystal
OSC
Clock
Synthesis
and Control
Circuitry
66.66 MHz
33.33 MHz
GND
4
X1/ICLK
X2
27 MHz
Fundamental
Crystal or
Clock
OE
48 MHz
100 MHz
4
VDD
6