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參數(shù)資料
| 型號： | ICS810001-21 |
| 英文描述： | FEMTOCLOCKS-TM DUAL VCXO VIDEO PLL |
| 中文描述： | FEMTOCLOCKS -商標(biāo)雙壓控視頻鎖相環(huán) |
| 文件頁數(shù)： | 18/21頁 |
| 文件大小： | 244K |
| 代理商： | ICS810001-21 |
810001BK-21
www.icst.com/products/hiperclocks.html
REV. A AUGUST 12, 2005
18
Integrated
Circuit
Systems, Inc.
ICS810001-21
F
EMTO
C
LOCKS
D
UAL
VCXO V
IDEO
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
, V
, V
, and
V
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 10
μ
F and a .01
μ
F bypass
capacitor should be connected to each V
DDA
pin.
P
OWER
S
UPPLY
F
ILTERING
T
ECHNIQUES
F
IGURE
3. P
OWER
S
UPPLY
F
ILTERING
10
Ω
V
DDA
10
μ
F
.01
μ
F
3.3V
.01
μ
F
V
DD
N
OTES
ON
S
ETTING
C
HARGE
P
UMP
C
URRENT
The recommended range for the charge pump current is 50
μ
A
to 300
μ
A. Below 50
μ
A, 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
R
SET
,
Ω
I
C
,
R
T
k
E
S
I
t
n
e
r
u
C
p
m
u
P
e
g
r
a
h
C
P
C
)
6
1
A
μ
5
6
k
8
A
μ
5
2
1
k
k
4
2
A
A
μ
μ
0
0
5
0
2
5
F
IGURE
2. C
HARGE
P
UMP
C
URRENT
VS
. V
ALUE
OF
R
SET
(
EXTERNAL
RESISTOR
) G
RAPH
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.
C
HARGE
P
UMP
C
URRENT
, E
XAMPLE
S
ETTINGS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS810001-22 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:FemtoClock? Dual VCXO Video PLL |
| ICS810001BK-21 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM DUAL VCXO VIDEO PLL |
| ICS810001BK-21T | 制造商:ICS 制造商全稱: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 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| ICS810001BK-22LFT | 功能描述:IC CLK SYNC DL VCXO PLL 32 VFQFN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
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