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參數(shù)資料
| 型號(hào)： | ICS874002AGLF |
| 元件分類： | 時(shí)鐘及定時(shí) |
| 英文描述： | 874002 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20 |
| 封裝： | 6.50 X 4.40 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-20 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 260K |
| 代理商： | ICS874002AGLF |
Integrated
Circuit
Systems, Inc.
874002AG
www.icst.com/products/hiperclocks.html
REV. A APRIL 6, 2006
1
ICS874002
PCI EXPRESS
JITTER ATTENUATOR
GENERAL DESCRIPTION
The ICS874002 is a high performance Differential-
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 ICS874002 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 874002 can be
set for 1:1 mode or 5/4 multiplication mode (i.e. 100MHz
input/125MHz output) using the F_SEL pin.
The ICS874002 uses ICS 3rd Generation FemtoClockTM
PLL technology to achieve the lowest possible phase noise.
The device is packaged in a 20 Lead TSSOP package,
making it ideal for use in space constrained applications
such as PCI Express add-in cards.
FEATURES
Two 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: 35ps (maximum)
3.3V operating supply
Three 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 (TYPICAL)
0
÷5
1
÷4
÷5 (fixed)
VCO
490 - 640 MHz
Phase
Detector
(default)
PD
OE
F_SEL
BW_SEL
0 = 200kHz
Float = 400kHz
1 = 800kHz
CLK
nCLK
FB_IN
nFB_IN
MR
QA1
nQA1
FB_OUT
nFB_OUT
PD
PU
Float
PIN ASSIGNMENT
ICS874002
20-Lead TSSOP
6.5mm x 4.4mm x 0.92mm
package body
G Package
Top View
nQA0
VDDO
FB_OUT
nFB_OUT
MR
BW_SEL
nc
VDDA
F_SEL
VDD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
QA0
VDDO
QA1
nQA1
nFB_IN
FB_IN
GND
nCLK
CLK
OE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS874003AGI-03 | 874003 SERIES, PLL BASED CLOCK DRIVER, 3 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20 |
| ICS874003AGI-03LFT | 874003 SERIES, PLL BASED CLOCK DRIVER, 3 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20 |
| ICS874003AGLFT | 874003 SERIES, PLL BASED CLOCK DRIVER, 3 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20 |
| ICS874003AGT | 874003 SERIES, PLL BASED CLOCK DRIVER, 3 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20 |
| ICS874005AG-04LF | 874005 SERIES, PLL BASED CLOCK DRIVER, 5 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 |
|---|---|
| ICS874002AGLFT | 功能描述:IC PCI EXPRSS/JITT ATTEN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™, PCI Express® (PCIe) 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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 |
| ICS874003AG-02LF | 功能描述:IC JITTER ATTENUATOR 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/頻率發(fā)生器，多路復(fù)用器 PLL:是 主要目的:存儲(chǔ)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 |
| ICS874003AG-02LFT | 功能描述:IC PCI EXPRSS/JITT ATTEN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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 |
| ICS874003AG-04LF | 功能描述:IC PCI EXPRSS/JITT ATTEN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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 |
| ICS874003AG-04LFT | 功能描述:IC PCI EXPRSS/JITT ATTEN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™, FemtoClock™, PCI Express® (PCIe) 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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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