參數(shù)資料
型號: 8427DY-02LFT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: XO, clock
英文描述: 500 MHz, OTHER CLOCK GENERATOR, PQFP32
封裝: 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026BBA, LQFP-32
文件頁數(shù): 7/23頁
文件大?。?/td> 1597K
代理商: 8427DY-02LFT
IDT / ICS LVHSTL FREQUENCY SYNTHESIZER
15
ICS8427DY-02 REV A OCTOBER 13, 2006
ICS8427-02
500MHZ, LOW JITTER, LVCMOS/CRYSSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER
Figure 8 shows an application schematic example of the
ICS8427-02. In this example, a 16.6667MHz, 18pF parallel
resonant crystal is used. The C1=22pF and C2=22pF are
LAYOUT GUIDELINE
FIGURE 8. SCHEMATIC OF RECOMMENDED LAYOUT
approximate values for frequency accuracy. The C1 and C2 may
be slightly adjusted for optimizing frequency accuracy.
C1
22p
C2
22p
VDD = 2.5V
VDDO = 1.8V
C7
0.1u
C6
0.1u
VDDO = 1.8V
Zo = 50
XTAL_SEL
TEST CLK
R2
50
R3
50
C9
0.1uF
U1
ICS8427-02
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
32
31
30
29
28
27
26
25
VDDO
FOUT2
nFOUT2
VDDO
FOUT3
nFOUT3
OE
GND
TE
S
T
VD
D
FO
U
T4
nF
O
U
T
4
V
DDO
FO
U
T5
nF
O
U
T
5
GN
D
MR
S_CLOCK
S_DATA
S_LOAD
VDDA
XTAL_SEL
TEST CLK
XTAL2
nF
O
U
T
1
FO
U
T
1
VD
D
O
nF
O
U
T
0
FO
U
T
0
VC
O
_
SEL
VD
D
XT
A
L
1
VDD = 2.5V
S_CLOCK
C10
0.1u
C5
0.1u
X1
16.6667MHz, 18pF
C8
0.1u
C4
10u
VDD = 2.5V
S_LOAD
R1
10
C3
0.01u
S_DATA
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