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PDF ICS843031AGT Data sheet ( Hoja de datos )
| Número de pieza | ICS843031AGT | |
| Descripción | FEMTOCLOCKS�� CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR | |
| Fabricantes | Integrated Circuit Systems　 | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843031
FEMTOCLOCKSâ„¢CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
ICS
The ICS843031 is a 1 Gigabit Ethernet Clock
Generator and a member of the HiPerClocksTM
HiPerClockSâ„¢ family of high performance devices from ICS. The
ICS843031 can synthesize 1 Gigabit Ethernet,
SONET, or Serial ATA reference clock frequencies
with the appropriate choice of crystal and output divider. The
ICS843031 has excellent phase jitter performance and is
packaged in a small 8-pin TSSOP, making it ideal for use in
systems with limited board space.
FEATURES
• 1 differential 3.3V LVPECL output
• Crystal oscillator interface designed for
18pF parallel resonant crystals
• VCO frequency range: 580MHz - 700MHz
• RMS phase jitter @312.5MHz (1.875MHz - 20MHz):
0.5ps (typical)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Industrial temperature information available upon request
FREQUENCY TABLE
Inputs
Crystal Frequency (MHz)
25.92
26.04166
26.5625
M/N Ratio (Multiplier)
12
12
12
Output Frequency
(MHz)
311.04
312.5
318.75
BLOCK DIAGRAM
PIN ASSIGNMENT
OE
XTAL_IN
XTAL-OUT
OSC
Phase
Detector
VCO
÷24
(fixed)
÷2
VCC 1
8 Q0
XTAL_OUT 2
7 nQ0
nQ0
XTAL_IN 3
VEE 4
6 VCC
5 OE
Q0
ICS843031
8-Lead TSSOP
4.40mm 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.
843031AG
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 29, 2004
1
1 page  
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843031
FEMTOCLOCKSâ„¢CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
2V
VCC
LVPECL
VEE
-1.3V ± 0.165V
SCOPE
Qx
nQx
Phase Noise Plot
f1 Offset Frequency f2
RMS Jitter = Area Under Offset Frequency Markers
3.3V OUTPUT LOAD AC TEST CIRCUIT
RMS PHASE JITTER
nQ0
Q0
Pulse Width
t
PERIOD
odc = t PW
t PERIOD
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
Clock
20%
Outputs
80%
tR
80%
tF
VSW I N G
20%
OUTPUT RISE/FALL TIME
843031AG
www.icst.com/products/hiperclocks.html
5
REV. A NOVEMBER 29, 2004
5 Page 
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS843031
FEMTOCLOCKSâ„¢CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
TABLE 9. ORDERING INFORMATION
Part/Order Number
ICS843031AG
ICS843031AGT
Marking
3031A
3031A
Package
8 lead TSSOP
8 lead TSSOP on Tape and Reel
Count
100 per tube
2500
Temperature
0°C to 70°C
0°C to 70°C
The aforementioned trademarks, HiPerClockSâ„¢ and FemtoClocksâ„¢ 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.
843031AG
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 29, 2004
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ICS843031AGT.PDF ] | |
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