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参数资料
| 型号： | 83PN625DKILF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | XO, clock |
| 英文描述： | 625 MHz, OTHER CLOCK GENERATOR, QCC10 |
| 封装： | 5 X 7 MM, 1 MM PITCH, ROHS COMPLIANT, VFQFN-10 |
| 文件页数： | 2/17页 |
| 文件大小： | 1314K |
| 代理商： | 83PN625DKILF |
ICS83PN625I Data Sheet
PROGRAMMABLE FEMTOCLOCK NG LVPECL OSCILLATOR REPLACEMENT
ICS83PN625DKI REVISION A MARCH 17, 2010
10
2010 Integrated Device Technology, Inc.
Termination for 3.3V LVPECL Outputs
The clock layout topology shown below is a typical termination for
LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
The differential output is low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, terminating
resistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50
transmission lines. Matched impedance techniques should be used
to maximize operating frequency and minimize signal distortion.
Figures 4A and 4B show two different layouts which are
recommended only as guidelines. Other suitable clock layouts may
exist and it would be recommended that the board designers
simulate to guarantee compatibility across all printed circuit and clock
component process variations.
Figure 4A. 3.3V LVPECL Output Termination
Figure 4B. 3.3V LVPECL Output Termination
3.3V
V
CC - 2V
R1
50
R2
50
RTT
Z
o = 50
Z
o = 50
+
_
RTT =
* Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
3.3V
LVPECL
Input
R1
84
R2
84
3.3V
R3
125
R4
125
Z
o = 50
Z
o = 50
LVPECL
Input
3.3V
+
_
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 83PN625DKILFT | 制造商:Integrated Device Technology Inc 功能描述:Programmable PLL Frequency Synthesizer Single 10-Pin VFQFN T/R 制造商:Integrated Device Technology Inc 功能描述:10 VFQFN (LEAD-FREE) - Tape and Reel |
| 83PR10 | 制造商:TT Electronics / BI Technologies 功能描述:Res Cermet Trimmer 10 Ohm 20% 1/2W 1(Elec)/1(Mech)Turn (6.35 X 8.12 X 4.57mm) Gull Wing SMD Box |
| 83PR100 | 制造商:TT Electronics / BI Technologies 功能描述:Res Cermet Trimmer 100 Ohm 10% 1/2W 1(Elec)/1(Mech)Turn (6.35 X 8.12 X 4.57mm) Gull Wing SMD Box |
| 83PR100K | 制造商:TT Electronics / BI Technologies 功能描述:Res Cermet Trimmer 100K Ohm 10% 1/2W 1(Elec)/1(Mech)Turn (6.35 X 8.12 X 4.57mm) Gull Wing SMD Box |
| 83PR100KLF | 制造商:TT Electronics / BI Technologies 功能描述:Res Cermet Trimmer 100K Ohm 10% 1/2W 1(Elec)/1(Mech)Turn (6.35 X 8.12 X 4.57mm) Gull Wing SMD Box |
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