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ICS275

更新时间: 2024-10-27 11:14:23
品牌 Logo 应用领域
矽成 - ICSI 石英晶振压控振荡器时钟
页数 文件大小 规格书
8页 162K
描述
Triple PLL Field Programmable VCXO Clock Synthesizer

ICS275 数据手册

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PRELIMINARY INFORMATION  
ICS275  
Triple PLL Field Programmable VCXO Clock Synthesizer  
Description  
Features  
Packaged as 16-pin TSSOP  
The ICS275 field programmable VCXO clock  
synthesizer generates up to four high-quality,  
high-frequency clock outputs including multiple  
reference clocks from a low-frequency crystal input. It  
is designed to replace crystals and crystal oscillators in  
most electronic systems.  
Eight addressable registers  
Replaces multiple crystals and oscillators  
Output frequencies up to 200 MHz at 3.3 V  
Input crystal frequency of 5 to 27 MHz  
Up to four reference outputs  
TM  
Using ICS’ VersaClock software to configure PLLs  
Up to two sets of two low-skew outputs  
Operating voltages of 3.3 V  
and outputs, the ICS275 contains a One-Time  
Programmable (OTP) ROM for field programmability.  
Programming features include VCXO, eight selectable  
configuration registers and up to two sets of two  
low-skew outputs.  
Controllable output drive levels  
Advanced, low-power CMOS process  
Available in Pb (lead) free packaging  
Using Phase-Locked Loop (PLL) techniques, the  
device runs from a standard fundamental mode,  
inexpensive crystal, or clock. It can replace VCXOs,  
multiple crystals and oscillators, saving board space  
and cost.  
The ICS275 is also available in factory programmed  
custom versions for high-volume applications.  
Block Diagram  
3
VDD  
3
OTP  
PLL1  
PLL2  
S2:S0  
CLK1  
CLK2  
CLK3  
CLK4  
ROM  
with  
PLL  
Divide  
Logic  
and  
Output  
Enable  
Control  
Values  
VIN  
PLL3  
X1  
X2  
Voltage  
Controlled  
Crystal  
Crystal  
Oscillator  
GND  
2
External capacitors  
are required.  
PDTS  
MDS 275 B  
1
Revision 040805  
Integrated Circuit Systems, Inc. 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com  

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