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PDF ICS840001 Data sheet ( Hoja de datos )
| Número de pieza | ICS840001 | |
| Descripción | CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ICS840001 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Integrated
Circuit
Systems, Inc.
ICS840001
FEMTOCLOCKS™CRYSTAL-TO-
LVCMOS/LVTTL CLOCK GENERATOR
GENERAL DESCRIPTION
ICS
The ICS840001 is a Fibre Channel Clock
Generator and a member of the HiPerClocksTM
HiPerClockS™ family of high performance devices from ICS. The
ICS840001 uses a 26.5625MHz crystal to
synthesize either 106.25MHz or 212.5MHz, using
the FREQ_SEL pin. The ICS840001 has excellent phase jitter
performance, over the 637KHz – 10MHz integration range.
The ICS840001 is packaged in a small 8-pin TSSOP, making
www.DataSheeitt4iUd.ecaolmfor use in systems with limited board space.
FEATURES
• 1 LVCMOS/LVTTL output, 7Ω typical output impedence
• Crystal oscillator interface designed for 26.5625MHz,
18pF parallel resonant crystal
• Selectable 106.25MHz or 212.5MHz output frequency
• VCO range: 560MHz to 680MHz
• RMS phase jitter @ 106.25MHz, using a 26.5625MHz crystal
(637KHz - 10MHz): 0.696ps (typical)
• RMS phase noise at 106.25MHz (typical)
Phase noise:
Offset
Noise Power
100Hz ............... -94.4 dBc/Hz
1KHz .............. -119.9 dBc/Hz
10KHz .............. -130.2 dBc/Hz
100KHz .............. -131.5 dBc/Hz
• 3.3V operating supply
• -30°C to 85°C ambient operating temperature
FUNCTION TABLE
Input
Output Frequencies
FREQ_SEL
0 106.25MHz (Default)
1 212.5MHz
Crystal: 26.5625MHz
BLOCK DIAGRAM
OE (Pullup)
FREQ_SEL (Pulldown)
XTAL_IN
XTAL_OUT
OSC
Phase
Detector
VCO
637.5MHz w/
26.5625MHz Ref.
M = ÷24 (fixed)
PIN ASSIGNMENT
÷3 1
÷6 0
Q0
VDDA
OE
XTAL_OUT
XTAL_IN
1
2
3
4
8 VDD
7 Q0
6 GND
5 FREQ_SEL
ICS840001
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
840001BG
www.icst.com/products/hiperclocks.html
1
REV. A MAY 10, 2004
1 page  
www.DataSheet4U.com
840001BG
Integrated
Circuit
Systems, Inc.
ICS840001
FEMTOCLOCKS™CRYSTAL-TO-
LVCMOS/LVTTL 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 106.25MHZ
Fibre Channel Filter
106.25MHz
RMS Phase Jitter (Random)
637K to 10MHz = 0.696ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Fibre Channel Filter to raw data
1k 10k 100k 1M 10M 100M
OFFSET FREQUENCY (HZ)
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 212.5MHZ
Fibre Channel Filter
212.5MHz
RMS Phase Jitter (Random)
2.55MHz to 20MHz = 0.458ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Fibre Channel Filter to raw data
1k 10k 100k 1M
OFFSET FREQUENCY (HZ)
www.icst.com/products/hiperclocks.html
10M
5
100M
REV. A MAY 10, 2004
5 Page 
Integrated
Circuit
Systems, Inc.
TABLE 9. ORDERING INFORMATION
Part/Order Number
ICS840001BG
ICS840001BGT
Marking
001B
001B
ICS840001
FEMTOCLOCKS™CRYSTAL-TO-
LVCMOS/LVTTL CLOCK GENERATOR
Package
8 lead TSSOP
8 lead TSSOP on Tape and Reel
Count
100 per tube
2500
Temperature
-30°C to 85°C
-30°C to 85°C
www.DataSheet4U.com
The aforementioned trademarks, HiPerClockS™ and FemtoClocks™ are a trademark 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 applications. Any other applications such as those requiring extended temperature range, 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.
840001BG
www.icst.com/products/hiperclocks.html
REV. A MAY 10, 2004
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ICS840001.PDF ] | |
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