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参数资料
| 型号： | MPC9330ACR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 120 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| 封装： | LEAD FREE, LQFP-32 |
| 文件页数： | 12/12页 |
| 文件大小： | 312K |
| 代理商： | MPC9330ACR2 |
Advanced Clock Drivers Devices
Freescale Semiconductor
9
MPC9330
the line impedances. The voltage wave launched down the
two lines will equal:
VL =VS ( Z0 ÷ (RS+R0 + Z0))
Z0 = 50 || 50
RS = 36 || 36
R0 = 14
VL = 3.0 (25 ÷ (18+14+25)
=1.31 V
At the load end, the voltage will double due to the near
unity reflection coefficient, to 2.6 V. It will then increment
towards the quiescent 3.0 V in steps separated by one round
trip delay (in this case 4.0 ns).
1.
Final skew data pending specification.
Figure 5. Single versus Dual Waveforms
Since this step is well above the threshold region, it will not
cause any false clock triggering; however, designers may be
uncomfortable with unwanted reflections on the line. To better
match the impedances when driving multiple lines, the
situation in should be used. In this case the series
terminating resistors are reduced such that when the parallel
combination is added to the output buffer impedance, the line
impedance is perfectly matched.
Figure 6. Optimized Dual Line Termination
Figure 7. CCLK MPC9330 AC Test Reference for Vcc = 3.3 V
Time (ns)
Volt
age
(V
)
3.0
2.5
2.0
1.5
1.0
0.5
0
2
4
6
8
10
12
14
OutB
tD = 3.9386
OutA
tD = 3.8956
In
14
+ 22 || 22 = 50 || 50
25
= 25
14
MPC9330
Output
Buffer
RS = 22
ZO = 50
RS = 22
ZO = 50
Pulse
Generator
Z = 50
RT = 50
ZO = 50
RT = 50
ZO = 50
MPC9930 DUT
VTT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC9330FA | 功能描述:时钟发生器及支持产品 3.3V 200MHz Clock Generator RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MPC9330FAR2 | 制造商:Integrated Device Technology Inc 功能描述:MPC9330FAR2 - Tape and Reel |
| MPC9331 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:3.3 V 1:6 LVCMOS PLL Clock Generator |
| MPC9331AC | 功能描述:时钟发生器及支持产品 FSL1-6 LVCMOS/LVPECL LVCMOS PLL Clk Gen RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MPC9331ACR2 | 功能描述:时钟发生器及支持产品 FSL1-6 LVCMOS/LVPECL LVCMOS PLL Clk Gen RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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