参数资料
型号: ICS843020AY-01LFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 5/21页
文件大小: 0K
描述: IC SYNTHESIZER LVPECL 32-LQFP
标准包装: 1,000
系列: HiPerClockS™, FemtoClock™
类型: 频率合成器
PLL: 带旁路
输入: 晶体
输出: LVPECL
电路数: 1
比率 - 输入:输出: 1:2
差分 - 输入:输出: 无/是
频率 - 最大: 680MHz
除法器/乘法器: 是/无
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 32-LQFP
供应商设备封装: 32-TQFP(7x7)
包装: 带卷 (TR)
其它名称: 843020AY-01LFT
843020AY-01
www.idt.com
REV. C JULY 26, 2010
13
ICS843020-01
FEMTOCLOCKS 680MHZ, CRYSTAL-TO-
3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
The schematic of the ICS843020-01 layout example used in
this layout guideline is shown in Figure 5A. The ICS843020-
01 recommended PCB board layout for this example is shown
in Figure 5B. This layout example is used as a general guide-
LAYOUT GUIDELINE
FIGURE 5A. SCHEMATIC OF RECOMMENDED LAYOUT
line. The layout in the actual system will depend on the se-
lected component types, the density of the components, the
density of the traces, and the stack up of the P.C. board.
VC
C
C2
X1
Set Logic
Input to
'1'
'0'
C14
0.1u
S_LOAD
Set Logic
Input to
'0'
TL1
Zo = 50 Ohm
'1'
VCC
REF_IN
VCCA
RU1
1K
C15
0.1u
RU2
Not Install
VCC
C16
10u
To Logic
Input
pins
R7
10
C11
0.01u
RD1
Not Install
S_DATA
R3
133
C1
R1
133
R5
1K
U1
ICS843020-01
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
M5
M6
M7
M8
N0
N1
P_DIV
VEE
TE
S
T
VC
C
FO
U
T1
nF
O
U
T
1
V
CCO
FO
U
T0
nF
O
U
T
0
VE
E
MR
S_CLOCK
S_DATA
S_LOAD
VCCA
nXTAL_SEL
T_CLK
XTAL_O
M4
M3
M2
M1
M0
VC
O_SE
L
nP_LO
AD
XT
A
L_
I
Float
VCC
FO
UTN
S_CLOCK
To Logic
Input
pins
RD2
1K
R2
82.5
VCC
Logic Input Pin Examples
XTAL_SEL
+
-
R6
1K
R4
82.5
TL2
Zo = 50 Ohm
VC
C
VCC
FO
UT
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