參數(shù)資料
型號： ICS874005AGT
元件分類： 時鐘及定時
英文描述： 874005 SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24
封裝： 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24
文件頁數(shù)： 1/12頁
文件大?。?/td> 462K
代理商： ICS874005AGT
Integrated
Circuit
Systems, Inc.
874005AG
www.icst.com/products/hiperclocks.html
REV. A JANUARY 25, 2006
1
ICS874005
PCI EXPRESS
JITTER ATTENUATOR
GENERAL DESCRIPTION
The ICS874005 is a high performance Diff-
erential-to-LVDS Jitter Attenuator designed for
use in PCI Express systems. In some PCI
Express systems, such as those found in
desktop PCs, the PCI Express clocks are
generated from a low bandwidth, high phase noise PLL
frequency synthesizer. In these systems, a jitter attenuator
may be required to attenuate high frequency random and
deterministic jitter components from the PLL synthesizer
and from the system board. The ICS874005 has 3 PLL
bandwidth modes: 200kHz, 400kHz, and 800kHz. The
200kHz mode will provide maximum jitter attenuation, but
with higher PLL tracking skew and spread spectrum
modulation from the motherboard synthesizer may be
attenuated. The 400kHz provides an intermediate bandwidth
that can easily track triangular spread profiles, while
providing good jitter attenuation. The 800kHz bandwidth
provides the best tracking skew and will pass most spread
profiles, but the jitter attenuation will not be as good as the
lower bandwidth modes. Because some 2.5Gb serdes have
x20 multipliers while others have than x25 multipliers, the
874005 can be set for 1:1 mode or 5/4 multiplication mode
(i.e. 100MHz input/125MHz output) using the F_SEL pins.
The ICS874005 uses ICS 3rd Generation FemtoClockTM
PLL technology to achive the lowest possible phase noise.
The device is packaged in a 24 Lead TSSOP package,
making it ideal for use in space constrained applications
such as PCI Express add-in cards.
FEATURES
Five differential LVDS output pairs
One differential clock input
CLK and nCLK supports the following input types:
LVPECL, LVDS, LVHSTL, SSTL, HCSL
Output frequency range: 98MHz - 160MHz
Input frequency range: 98MHz - 128MHz
VCO range: 490MHz - 640MHz
Cycle-to-cycle jitter: 30ps (maximum)
3.3V operating supply
3 bandwidth modes allow the system designer to make
jitter attenuation/tracking skew design trade-offs
0°C to 70°C ambient operating temperature
Available in both standard and lead-free RoHS compliant
packages
HiPerClockS
ICS
QA0
nQA0
BLOCK DIAGRAM
BW_SEL
0 = PLL Bandwidth: ~200kHz
Float = PLL Bandwidth: ~400kHz (Default)
1 = PLL Bandwidth: ~800kHz
PLL BANDWIDTH
F_SELA
0
÷5 (default)
1
÷4
F_SELB
0
÷5 (default)
1
÷4
VCO
490 - 640MHz
Phase
Detector
M = ÷5 (fixed)
Pulldown
OEA
F_SELA
BW_SEL
CLK
nCLK
F_SELB
MR
OEB Pullup
QA1
nQA1
QB0
nQB0
QB1
nQB1
Pulldown
Pullup
Pulldown
Float
PIN ASSIGNMENT
ICS874005
24-Lead TSSOP
4.40mm x 7.8mm x 0.92mm
package body
G Package
Top View
nQB2
nQA1
QA1
VDDO
QA0
nQA0
MR
BW_SEL
VDDA
F_SELA
VDD
OEA
1
2
3
4
5
6
7
8
9
10
11
12
QB2
VDDO
QB1
nQB1
QB0
nQB0
F_SELB
OEB
GND
nCLK
CLK
24
23
22
21
20
19
18
17
16
15
14
13
Pulldown
QB2
nQB2
0 = ~200kHz
Float = ~400kHz
1 = ~800kHz
相關(guān)PDF資料
PDF描述
ICS874005AG 874005 SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24
ICS874005AGLF 874005 SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24
ICS8741004AGIT 8741004 SERIES, PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24
ICS8741004AGI 8741004 SERIES, PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24
ICS8741004AGI 8741004 SERIES, PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS8741004AGLF 功能描述:IC PCI EXPRSS/JITT ATTEN 24TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標準包裝:1 系列:- 類型:時鐘/頻率發(fā)生器，多路復(fù)用器 PLL:是 主要目的:存儲器，RDRAM 輸入:晶體 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:1:2 差分 - 輸入:輸出:無/是 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:Digi-Reel® 其它名稱:296-6719-6
ICS8741004AGLFT 功能描述:IC PCI EXPRSS/JITT ATTEN 24TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標準包裝: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
ICS8741004BGILF 功能描述:IC PCI EXPRSS/JITT ATTEN 24TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標準包裝: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
ICS8741004BGILFT 功能描述:IC PCI EXPRSS/JITT ATTEN 24TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標準包裝: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
ICS874208BKILF 制造商:Integrated Device Technology Inc 功能描述:IC CLK BUFFER/DIVIDER 32VFQFN
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