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ICS650-07C

Integrated Circuit Systems
Part Number ICS650-07C
Manufacturer Integrated Circuit Systems
Description Networking Clock Source
Published Apr 27, 2006
Detailed Description ( D a t a S h e e t : w w w . D a t a S h e e t 4 U . c o m ) PRELIMINARY INFORMATION ICS650-07C Networking Clock ...
Datasheet PDF File ICS650-07C PDF File

ICS650-07C
ICS650-07C

Overview
( D a t a S h e e t : w w w .
D a t a S h e e t 4 U .
c o m ) PRELIMINARY INFORMATION ICS650-07C Networking Clock Source Description The ICS650-07C is a low cost, low jitter, high performance clock synthesizer for networking applications.
Using analog Phase-Locked Loop (PLL) techniques, the device accepts a 12.
5 MHz or 25.
00 MHz clock or fundamental mode crystal input to produce multiple output clocks for networking chips, PCI devices, SDRAM, and ASICs.
The ICS650-07C outputs all have 0 ppm synthesis error.
See the MK74CB214, ICS551, and ICS552-01 for non-PLL buffer devices which produce multiple low-skew copies of these output clocks.
See the ICS570, ICS9112-16/17/18 for zero delay buffers that can synchronize outputs and other needed clocks.
Features • Packaged in 20 pin narrow (150 mil) SSOP (QSOP) • 12.
5 MHz or 25.
00 MHz fundamental crystal or clock input • Six output clocks with selectable frequencies • SDRAM frequencies of 67, 83, 100, and 133 MHz • Buffered crystal reference output • Zero ppm synthesis error in all clocks • Ideal for PMC-Sierra’s ATM switch chips • Full CMOS output swing with 25 mA output drive capability at TTL levels • Advanced, low power, sub-micron CMOS process • 3.
0V to 5.
5V operating voltage Block Diagram VDD GND 2 2 2 Output Buffer CLKA1 CLKA2 CLKB1 CLKB2 CLKC1 CLKC2 REFOUT ACS1,0 BCS1,0 CCS 12.
5 MHz or 25.
00 MHz crystal or clock X1 ÷2 2 Clock Synthesis and Control Circuitry ÷2 Output Buffer Output Buffer Output Buffer Output Buffer Output Buffer Output Buffer X2 Clock Buffer/ Crystal Oscillator OE (all outputs) Optional crystal capacitors are shown and may be required for tuning of initial accuracy (determined once per board).
1 Revision 101399 Printed 11/28/00 Integrated Circuit Systems, Inc.
• 525 Race Street • San Jose • CA • 95126•(408)295-9800tel • www.
icst.
com MDS 650-07C A www.
DataSheet4U.
com PRELIMINARY INFORMATION ICS650-07C Networking Clock Source For a 25 MHz fundamental crystal or clock input, the ...


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