|
|
PDF ICS874003-02 Data sheet ( Hoja de datos )
| Número de pieza | ICS874003-02 | |
| Descripción | PCI EXPRESS JITTER ATTENUATOR | |
| Fabricantes | Integrated Device Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ICS874003-02 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
PCI EXPRESS™ JITTER ATTENUATOR
www.DataSheet4U.com
ICS874003-02
GENERAL DESCRIPTION
The ICS874003-02 is a high performance Dif-
ICS ferential-to-LVDS Jitter Attenuator designed for
HiPerClockS™ 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
ICS874003-02 has a bandwidth of 400kHz. The 400kHz
provides an intermediate bandwidth that can easily track
triangular spread profiles, while providing good jitter
attenuation.
The ICS874003-02 uses IDT’s 3rd Generation FemtoClockTM
PLL technology to achive 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
• Three 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 - 320MHz
• Input frequency range: 98MHz - 128MHz
• VCO range: 490MHz - 640MHz
• Cycle-to-cycle jitter: 35ps (maximum)
• Supports PCI-Express Spread-Spectrum Clocking
• The 400kHz bandwidth mode allows the system designer to
make jitter attenuation/tracking skew design trade-offs
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
BLOCK DIAGRAM
OEA Pullup
F_SEL2:0 Pulldown
3
CLK Pulldown
nCLK Pullup
Phase
Detector
VCO
490 - 640MHz
F_SEL[2:0] FUNCTION TABLE
F_SEL2
0
1
0
1
0
1
0
1
Inputs
F_SEL1
0
0
1
1
0
0
1
1
F_SEL0
0
0
0
0
1
1
1
1
Outputs
QA0/nQA0, QA0/nQA0
÷2
÷5
÷4
÷2
÷2
÷5
÷4
÷4
QB0/nQB0
÷2
÷2
÷2
÷4
÷5
÷4
÷5
÷4
÷5
÷4
÷2 (default)
3
QA0
nQA0
QA1
nQA1
PIN ASSIGNMENT
QA1
VDDO
QA0
nQA0
MR
F_SEL0
nc
VDDA
F_SEL1
VDD
1
2
3
4
5
6
7
8
9
10
20 nQA1
19 VDDO
18 QB0
17 nQB0
16 F_SEL2
15 OEB
14 GND
13 nCLK
12 CLK
11 OEA
MR Pulldown
OEB Pullup
M = ÷5 (fixed)
÷5
÷4
÷2 (default)
QB0 ICS874003-02
20-Lead TSSOP
nQB0
6.5mm x 4.4mm x 0.92mm
package body
G Package
Top View
IDT™ / ICS™ PCI EXPRESS™ JITTER ATTENUATOR
1
ICS874003AG-02 REV A AUGUST 29, 2006
1 page  
ICS874003-02
PCI EXPRESS™ JITTER ATTENUATOR
PARAMETER MEASUREMENT INFORMATION
www.DataSheet4U.com
3.3V±5%
POWER SUPPLY
+ Float GND –
VDD,
VDDO
VDDA
LVDS
SCOPE
Qx
nQx
VDD
nCLK
CLK
V
PP
GND
Cross Points
V
CMR
3.3V LVDS OUTPUT LOAD AC TEST CIRCUIT
DIFFERENTIAL INPUT LEVEL
nQA0, nQA1,
nQB0
QA0, QA1,
QB0
tcycle n
➤
tcycle n+1
tjit(cc) = tcycle n –tcycle n+1
1000 Cycles
➤
nQx
Qx
nQy
Qy
t sk(o)
CYCLE-TO-CYCLE JITTER
nQXx
QXx
nQXy
QXy
t sk(b)
Where X = A or B
BANK SKEW
IDT™ / ICS™ PCI EXPRESS™ JITTER ATTENUATOR
OUTPUT SKEW
nQA0, nQA1,
nQB0
QA0, QA1,
QB0
t PW
t
PERIOD
odc = t PW x 100%
t PERIOD
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
5 ICS874003AG-02 REV A AUGUST 29, 2006
5 Page 
ICS874003-02
PCI EXPRESS™ JITTER ATTENUATOR
RELIABILITY INFORMATION
www.DataSheet4U.com
TABLE 6. θ VS. AIR FLOW TABLE FOR 20 LEAD TSSOP
JA
θ by Velocity (Linear Feet per Minute)
JA
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
0
114.5°C/W
73.2°C/W
200
98.0°C/W
66.6°C/W
500
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.
TRANSISTOR COUNT
The transistor count for ICS874003-02 is: 1408
IDT™ / ICS™ PCI EXPRESS™ JITTER ATTENUATOR
11
ICS874003AG-02 REV A AUGUST 29, 2006
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ICS874003-02.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ICS874003-02 | PCI EXPRESS JITTER ATTENUATOR | Integrated Device Technology |
| ICS874003-04 | PCI EXPRESS Jitter Attenuator | Integrated Device Technology |
| ICS874003-05 | PCI EXPRESS JITTER ATTENUATOR | Integrated Device Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |