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| 型号： | ICS810001BK-21 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 810001 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC32 |
| 封装： | 5 X 5 MM, 0.95 MM HEIGHT, MO-220VHHD-2, VFQFN-32 |
| 文件页数： | 10/22页 |
| 文件大小： | 485K |
| 代理商： | ICS810001BK-21 |
810001BK-21
www.icst.com/products/hiperclocks.html
REV. A AUGUST 12, 2005
18
Integrated
Circuit
Systems, Inc.
ICS810001-21
FEMTOCLOCKSDUAL VCXO VIDEO PLL
PRELIMINARY
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS810001-21 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
DD, VDDA, VDDx, and
V
DDO should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance,
power supply isolation is required. Figure 3 illustrates how
a 10
Ω resistor along with a 10μF and a .01μF bypass
capacitor should be connected to each V
DDA pin.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 3. POWER SUPPLY FILTERING
10
Ω
V
DDA
10
μF
.01
μF
3.3V
.01
μF
V
DD
NOTES ON SETTING CHARGE PUMP CURRENT
The recommended range for the charge pump current is 50
μA
to 300
μA. Below 50μA, loop filter charge leakage, due to PCB or
capacitor leakage, can become a problem.This loop filter leakage
can cause locking problems, output clock cycle slips, or low
frequency phase noise.
1E-3
100E-6
10E-6
1k
10k
100k
RSET, Ω
I CP
,Amps
R
T
E
S
I
(
t
n
e
r
u
C
p
m
u
P
e
g
r
a
h
C
P
C )
k
6
.
7
1A
5
.
2
6
k
8
.
8A
5
2
1
k
4
.
4A
0
5
2
k
2
.
2A
0
5
FIGURE 2. CHARGE PUMP CURRENT VS. VALUE OF R
SET (
EXTERNAL RESISTOR
) GRAPH
As can be seen in the loop bandwidth and damping factor
equations or by using the filter response software available from
ICS, increasing charge pump current (I
CP) increases both
bandwidth and damping factor.
CHARGE PUMP CURRENT, EXAMPLE SETTINGS
ICS810001-21
FEMTOCLOCKS DUAL VCXO VIDEO PLL
TSD
IDT / ICS FEMTOCLOCKS DUAL VCXO VIDEO PLL
ICS810001-21
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS810001BK-21T | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM DUAL VCXO VIDEO PLL |
| ICS810001BK-22LF | 功能描述:IC CLK SYNC DL VCXO PLL 32 VFQFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, FemtoClock™ 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ICS810001BK-22LFT | 功能描述:IC CLK SYNC DL VCXO PLL 32 VFQFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, FemtoClock™ 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ICS810001DK-21LF | 功能描述:IC CLK GEN SYNC VCXO DL 32VFQFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, FemtoClock™ 标准包装:1 系列:- 类型:时钟/频率发生器，多路复用器 PLL:是 主要目的:存储器，RDRAM 输入:晶体 输出:LVCMOS 电路数:1 比率 - 输入:输出:1:2 差分 - 输入:输出:无/是 频率 - 最大:400MHz 电源电压:3 V ~ 3.6 V 工作温度:0°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:Digi-Reel® 其它名称:296-6719-6 |
| ICS810001DK-21LFT | 功能描述:IC CLK GEN SYNC VCXO DL 32VFQFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, FemtoClock™ 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
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