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PDF ICS840002-01 Data sheet ( Hoja de datos )
| Número de pieza | ICS840002-01 | |
| 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 ICS840002-01 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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Integrated
Circuit
Systems, Inc.
ICS840002-01
FEMTOCLOCKS™CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
FEATURES
The ICS840002-01 is a 2 output LVCMOS/LVTTL
ICS Synthesizer optimized to generate Ethernet
HiPerClockS™ reference clock frequencies and is a member of
the HiPerClocksTM family of high performance
clock solutions from ICS. Using a 25MHz 18pF
parallel resonant crystal, the following frequencies can be
generated based on the 2 frequency select pins (F_SEL1:0):
156.25MHz, 125MHz, and 62.5MHz. The ICS840002-01 uses
www.DataSheeItC4US.’c3ormd generation low phase noise VCO technology and can
achieve 1ps or lower typical random rms phase jitter, easily
meeting Ethernet jitter requirements. The ICS840002-01 is
packaged in a small 16-pin TSSOP package.
• Two LVCMOS/LVTTL outputs @ 3.3V,
17Ω typical output impedance
• Selectable crystal oscillator interface
or LVCMOS/LVTTL single-ended input
• Output frequency range: 56MHz - 175MHz
• VCO range: 560MHz - 700MHz
• Output skew: 12ps (maximum)
• RMS phase jitter at 156.25MHZ (1.875MHz - 20MHz):
0.47ps (typical)
Phase noise:
Offset
Noise Power
100Hz ............... -97.4 dBc/Hz
1kHz .............. -120.2 dBc/Hz
10kHz .............. -127.6 dBc/Hz
100kHz .............. -126.1 dBc/Hz
• Full 3.3V or 3.3V core/2.5V output supply mode
• -30°C to 85°C ambient operating temperature
• Available in both standard and lead-free RoHS compliant
packages
FREQUENCY SELECT FUNCTION TABLE
Inputs
Output Frequency
F_SEL1 F_SEL0 M Divider Value N Divider Value (25MHz Ref.)
00
25
4 156.25
01
25
5
125
10
25
10
62.5
11
25
5
125
BLOCK DIAGRAM
OE Pullup
F_SEL1:0 Pullup:Pullup
nPLL_SEL Pulldown
nXTAL_SEL Pulldown
XTAL_IN 25MHz
OSC 0
XTAL_OUT
TEST_CLK Pulldown
1
2
Phase
Detector
VCO
F_SEL1:0
1N
0 0 ÷4
0 1 ÷5
0 1 0 ÷10
1 1 ÷5
M = ÷25 (fixed)
PIN ASSIGNMENT
F_SEL0 1 16 F_SEL1
nXTAL_SEL 2 15 GND
TEST_CLK 3 14 GND
OE 4 13 Q0
MR 5 12 Q1
nPLL_SEL 6
1 1 VDDO
VDDA 7
10 XTAL_IN
VDD 8
9 XTAL_OUT
Q0
ICS840002-01
Q1 16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
MR Pulldown
840002AG-01
www.icst.com/products/hiperclocks.html
1
REV. B JANUARY 13, 2006
1 page  
www.DataSheet4U.com
Integrated
Circuit
Systems, Inc.
ICS840002-01
FEMTOCLOCKS™CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
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 62.5MHZ @3.3V
1Gb Ethernet Filter
62.5MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.51ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
1Gb Ethernet Filter to raw data
1k 10k 100k 1M 10M 100M
OFFSET FREQUENCY (HZ)
840002AG-01
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 156.25MHZ @3.3V
10Gb Ethernet Filter
156.25MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.47ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
10Gb Ethernet Filter to raw data
1k 10k 100k 1M
OFFSET FREQUENCY (HZ)
www.icst.com/products/hiperclocks.html
10M
100M
REV. B JANUARY 13, 2006
5
5 Page 
Integrated
Circuit
Systems, Inc.
ICS840002-01
FEMTOCLOCKS™CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
TABLE 8. ORDERING INFORMATION
Part/Order Number
Marking
Package
Shipping Packaging Temperature
ICS840002AG-01
40002A01
16 Lead TSSOP
tube
-30°C to 85°C
ICS840002AG-01T
40002A01
16 Lead TSSOP
2500 tape & reel -30°C to 85°C
ICS840002AG-01LF
0002A01L
16 Lead "Lead-Free" TSSOP
tube
-30°C to 85°C
ICS840002AG-01LFT
0002A01L
16 Lead "Lead-Free" TSSOP 2500 tape & reel -30°C to 85°C
NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
www.DataSheet4U.com
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 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.
840002AG-01
www.icst.com/products/hiperclocks.html
REV. B JANUARY 13, 2006
11
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ICS840002-01.PDF ] | |
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