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參數(shù)資料
| 型號： | MPC9350ACR2 |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PLL CLOCK DRIVER LV 32-LQFP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 類型： | PLL 時鐘發(fā)生器 |
| PLL： | 帶旁路 |
| 輸入： | LVCMOS，晶體 |
| 輸出： | LVCMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 3:9 |
| 差分 - 輸入:輸出： | 無/無 |
| 頻率 - 最大： | 200MHz |
| 除法器/乘法器： | 是/無 |
| 電源電壓： | 2.375 V ~ 3.465 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-LQFP |
| 供應(yīng)商設(shè)備封裝： | 32-TQFP（7x7） |
| 包裝： | 帶卷 (TR) |
MPC9350 REVISION 7 DECEMBER 19, 2012
8
2012 Integrated Device Technology, Inc.
MPC9350 Data Sheet
Low Voltage PLL Clock Driver
output-to-output skew of the MPC9350. The output waveform
in Figure 5 shows a step in the waveform. This step is caused
by the impedance mismatch seen looking into the driver. The
parallel combination of the 36
series resistor plus the
output impedance does not match the parallel combination of
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 =17
VL = 3.0 (25 (18+17+25))
= 1.25 V
At the load end the voltage will double, due to the near
unity reflection coefficient, to 2.5 V. It will then increment
toward the quiescent 3.0 V in steps separated by one round
trip delay (in this case 4.0 ns).
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 Figure 6 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. TCLK MPC9350 AC Test Reference for VCC = 3.3 V and VCC = 2.5 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
MPC9350
Output
Buffer
RS = 22
ZO = 50
RS = 22
ZO = 50
14
+ 22 || 22 = 50 || 50
25
= 25
Pulse
Generator
Z = 50
RT = 50
ZO = 50
RT = 50
ZO = 50
MPC9350 DUT
VTT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC9350D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW VOLTAGE PLL CLOCK DRIVER |
| MPC9350FA | 功能描述:時鐘驅(qū)動器及分配 2.5 3.3V 200MHz Clock Generator RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| MPC9350FAR2 | 制造商:Integrated Device Technology Inc 功能描述:PLL Clock Driver Single 32-Pin LQFP T/R |
| MPC9351 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Low Voltage PLL Clock Driver |
| MPC9351AC | 功能描述:時鐘驅(qū)動器及分配 2.5 3.3V 200MHz Clock Generator RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
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