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CY2XP22ZXCT PDF预览

CY2XP22ZXCT

更新时间: 2024-10-02 06:51:35
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟发生器
页数 文件大小 规格书
8页 234K
描述
Crystal to LVPECL Clock Generator

CY2XP22ZXCT 数据手册

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PRELIMINARY  
CY2XP22  
Crystal to LVPECL Clock Generator  
Features  
One LVPECL Output Pair  
Pb-free 8-Pin TSSOP Package  
Selectable Frequency Multiplication: x2.5 or x5  
External Crystal Frequency: 25.0 MHz  
Output Frequency: 62.5 MHz or 125 MHz  
Supply Voltage: 3.3V or 2.5V  
Commercial and Industrial Temperature Ranges  
Functional Description  
Low RMS Phase Jitter at 125 MHz, using 25 MHz Crystal  
(1.875 MHz to 20 MHz): 0.4 ps (Typical)  
The CY2XP22 is a PLL (Phase Locked Loop) based high  
performance clock generator that uses an external reference  
crystal. It is specifically targeted at FibreChannel and Gigabit  
Ethernet applications. It produces a selectable output frequency  
that is 2.5 or 5 times the crystal frequency. With a 25 MHz crystal,  
the user can select either a 62.5 MHz or 125 MHz output. It uses  
Cypress’s low noise VCO technology to achieve less than 1 ps  
typical RMS phase jitter. The CY2XP22 has a crystal oscillator  
interface input and one LVPECL output pair.  
Phase Noise at 125 MHz:  
Offset  
1 kHz  
Noise Power  
–117 dBc/Hz  
–126 dBc/Hz  
–131 dBc/Hz  
–131 dBc/Hz  
10 kHz  
100 kHz  
1 MHz  
Logic Block Diagram  
XIN  
External  
Crystal  
CLK  
CRYSTAL  
OSCILLATOR  
LOW -N OISE  
PLL  
OUTPUT  
DIVIDER  
CLK#  
XOUT  
F_SEL  
Pinouts  
Figure 1. Pin Diagram - 8-Pin TSSOP  
VDD  
VSS  
XOUT  
XIN  
1
2
3
4
8
7
6
5
VDD  
CLK  
CLK#  
F_SEL  
Table 1. Pin Definition - 8-Pin TSSOP  
Pin Number  
Pin Name  
VDD  
I/O Type  
Description  
1, 8  
2
Power  
Power  
3.3V or 2.5V power supply  
Ground  
VSS  
3, 4  
5
XOUT, XIN  
F_SEL  
XTAL output and input  
CMOS input  
Parallel resonant crystal interface  
Frequency Select: see Frequency Table  
Differential Clock Output  
6,7  
CLK#, CLK  
LVPECL output  
Cypress Semiconductor Corporation  
Document #: 001-10229 Rev. *C  
198 Champion Court  
San Jose  
,
CA 95134-1709  
408-943-2600  
Revised June 15, 2009  
[+] Feedback  

CY2XP22ZXCT 替代型号

型号 品牌 替代类型 描述 数据表
CY2XP22ZXIT CYPRESS

完全替代

Crystal to LVPECL Clock Generator
CY2XP22ZXC CYPRESS

完全替代

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CY2XP22ZXI CYPRESS

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