|
|
PDF ICS844251I-15 Data sheet ( Hoja de datos )
| Número de pieza | ICS844251I-15 | |
| Descripción | CRYSTAL-TO-LVDS CLOCK GENERATOR | |
| Fabricantes | ICS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ICS844251I-15 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844251I-15
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS844251I-15 is an Ethernet Clock
ICS Generator and a member of the HiPerClocksTM
HiPerClockS™ family of high performance devices from ICS.
The ICS844251I-15 uses an 18pF parallel
resonant crystal over the range of 23.2MHz -
30MHz. For Ethernet applications, a 25MHz crystal is
used. The device has excellent <1ps phase jitter
performance, over the 1.875MHz - 20MHz integration
range. The ICS844251I-15 is packaged in a small 8-pin
TSSOP, making it ideal for use in systems with limited
board space.
FEATURES
• One Differential LVDS output
• Crystal oscillator interface, 18pF parallel resonant crystal
(23.2MHz - 30MHz)
• Output frequency ranges: 116MHz - 150MHz and
580MHz - 750MHz
• VCO range: 580MHz - 750MHz
• RMS phase jitter @ 125MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.46ps (typical)
• 3.3V or 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Available in both standard and lead-free RoHS-compliant
packages
COMMON CONFIGURATION TABLE
Inputs
Crystal Frequency (MHz)
25
26.667
25
26.667
FREQ_SEL
1
1
0
0
M
25
25
25
25
Multiplication Value Output Frequency
N M/N
(MHz)
1 25
625
1 25
666.67
55
125
55
133.33
BLOCK DIAGRAM
FREQ_SEL Pulldown
XTAL_IN
XTAL_OUT
OSC
Phase
Detector
VCO
580MHz - 750MHz
M = ÷25 (fixed)
FREQ_SEL N
0 ÷1
1 ÷5
PIN ASSIGNMENT
VDDA 1
8 VDD
GND 2
7Q
XTAL_OUT 3
6 nQ
Q
XTAL_IN 4
5 FREQ_SEL
nQ
ICS844251I-15
8-Lead TSSOP
4.4mm x 3.0mm x 0.925mm
package body
G Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on
initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications
without notice.
844251BGI-15
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
1
1 page  
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844251I-15
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
CLOCK GENERATOR
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
TYPICAL PHASE NOISE AT 125MHZ @ 3.3V
Ethernet Filter
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.46ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Ethernet Filter to raw data
1k
10k
100k
1M
10M
100M
OFFSET FREQUENCY (HZ)
844251BGI-15
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
TYPICAL PHASE NOISE AT 625MHZ @ 3.3V
Ethernet Filter
625MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.35ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Ethernet Filter to raw data
1k 10k 100k 1M
OFFSET FREQUENCY (HZ)
www.icst.com/products/hiperclocks.html
5
10M
100M
REV. A NOVEMBER 23, 2005
5 Page 
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844251I-15
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
CLOCK GENERATOR
TABLE 8. ORDERING INFORMATION
Part/Order Number
Marking
Package
Shipping Packaging Temperature
ICS844251BGI-15
4BI15
8 Lead TSSOP
tube
-40°C to 85°C
ICS844251BGI-15T
4BI15
8 Lead TSSOP
2500 tape & reel
-40°C to 85°C
ICS844251BGI-15LF
TBD
8 Lead "Lead-Free" TSSOP
tube
-40°C to 85°C
ICS844251BGI-15LFT
TBD
8 Lead "Lead-Free" TSSOP 2500 tape & reel
-40°C to 85°C
NOTE: Parts thar are ordered with an "LF" suffix to the part number are the Pb-Free configuraiton and are RoHS compliant.
The aforementioned trademarks, HiPerClockS and FemtoClocks are trademarks of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use
or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use
in normal commercial and industrial applications. Any other applications such as those requiring high reliability or other extraordinary environmental requirements are not
recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product
for use in life support devices or critical medical instruments.
844251BGI-15
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ICS844251I-15.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ICS844251I-15 | CRYSTAL-TO-LVDS CLOCK GENERATOR | ICS |
| 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 |