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參數(shù)資料
| 型號： | ICS840004AG |
| 英文描述： | FEMTOCLOCKS CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS晶體到的LVCMOS / LVTTL頻率合成器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 310K |
| 代理商： | ICS840004AG |
Integrated
Circuit
Systems, Inc.
840004AG
www.icst.com/products/hiperclocks.html
REV. A SEPTEMBER 16, 2004
11
ICS840004
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
R
ELIABILITY
I
NFORMATION
T
RANSISTOR
C
OUNT
The transistor count for ICS840004 is: TBD
T
ABLE
6.
θ
JA
VS
. A
IR
F
LOW
T
ABLE
FOR
20 L
EAD
TSSOP
θ
JA
by Velocity (Linear Feet per Minute)
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
114.5°C/W
73.2°C/W
98.0°C/W
66.6°C/W
88.0°C/W
63.5°C/W
NOTE:
Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
R2
10
To Logic
Input
pins
VDDA
C4
0.01u
RD1
Not Install
C3
10uF
3.3V
LVCMOS
LVCMOS
Zo = 50 Ohm
XTAL_OUT
Set Logic
Input to
'1'
Logic Control Input Examples
XTAL_IN
RD2
1K
R3
36
C1
X1
R4
36
Set Logic
Input to
'0'
3.3V
Zo = 50 Ohm
C6
0.1u
C2
22pF
3.3V
RU1
1K
C5
0.1u
3.3V
3.3V
To Logic
Input
pins
RU2
Not Install
U1
ICS840004
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
19
18
17
F_SEL0
nc
nXTAL_SEL
TEST_CLK
OE
MR
nPLL_SEL
VDDA
nc
VDD
XTAL_OUT
XTGND
Q3
Q2
VDDO
F_SEL1
GND
Q0
Q1
L
AYOUT
G
UIDELINE
Figure 3 shows a schematic example of the ICS840004. An
example of LVCMOS termination is shown in this schematic.
Additional LVCMOS termination approaches are shown in the
LVCMOS Termination Application Note. In this example, an 18
pF parallel resonant 26.5625MHz crystal is used. The C1=22pF
F
IGURE
3. ICS840004 S
CHEMATIC
E
XAMPLE
and C2=22pF are recommended for frequency accuracy. For
different board layout, the C1 and C2 may be slightly adjusted
for optimizing frequency accuracy. 1K
pullup or pulldown re-
sistors can be used for the logic control input pins.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS840004AG-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840004AG-01LF | 功能描述:IC FREQ SYNTHESIZER 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS840004AG-01LFT | 功能描述:IC FREQ SYNTHESIZER 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS840004AG-01T | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840004AG-11 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
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