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參數(shù)資料
| 型號： | 840031AI |
| 英文描述： | FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS⑩晶體到的LVCMOS / LVTTL頻率合成器 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 181K |
| 代理商： | 840031AI |
840031AMI
www.icst.com/products/hiperclocks.html
REV. A FEBRUARY 24, 2005
7
Integrated
Circuit
Systems, Inc.
ICS840031I
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
LVCMOS/LVTTL C
LOCK
G
ENERATOR
R
ELIABILITY
I
NFORMATION
T
RANSISTOR
C
OUNT
The transistor count for ICS840031I is: 1787
T
ABLE
6.
θ
JA
VS
. A
IR
F
LOW
T
ABLE
FOR
8 L
EAD
SOIC
F
IGURE
3. ICS840031I A
PPLICATION
S
CHEMATIC
E
XAMPLE
A
PPLICATION
S
CHEMATIC
E
XAMPLE
Figure 3shows a schematic example of the ICS840031I. In this
example, a series termination, one of LVCMOS termination ap-
proaches, is shown. Additional LVCMOS termination approaches
are shown in the LVCMOS Termination Application Note. In this
example, an 18pF parallel resonant crystal is used. The C1=22pF
and C2=33pF are approximate values for frequency accuracy.
The C1 and C2 may be slightly adjusted for optimizing frequency
accuracy.
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
153.3°C/W
112.7°C/W
128.5°C/W
103.3°C/W
115.5°C/W
97.1°C/W
NOTE:
Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
θ
JA
by Velocity (Linear Feet per Minute)
C6
0.1u
C4
0.1u
VDD=3.3V
VDD
X1
CL=18pF
R2
10
VDDO=1.8V
R1
1K
R3
40
VDDA
VDD
C2
33pF
C5
0.1u
VDD
Zo = 50 Ohm
U1
ICS840031i
1
2
3
4
8
7
6
5
VDD
XTAL_OUT
XTAL_IN
VDDA
VDDO
Q0
GND
PLL_SEL
C3
10uF
C1
22pF
VDDO
LVCMOS
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 840031AMI | 制造商:Integrated Device Technology Inc 功能描述:840031AMI - Rail/Tube |
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| 840031AMILFT | 制造商:Integrated Device Technology Inc 功能描述:PLL Clock Synthesizer Single 8-Pin SOIC N T/R 制造商:Integrated Device Technology Inc 功能描述:PLL CLOCK SYNTHESIZER SGL 8SOIC - Tape and Reel |
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