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PDF ICS81006I Data sheet ( Hoja de datos )
| Número de pieza | ICS81006I | |
| Descripción | VCXO-TO-6 LVCMOS OUTPUTS | |
| Fabricantes | ICS | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
ICS81006I
VCXO-TO-6 LVCMOS OUTPUTS
GENERAL DESCRIPTION
The ICS81006I is a high performance, low
ICS j i t t e r / l o w p h a s e n o i s e V C X O a n d i s a
HiPerClockS™ member of the HiPerClockS™ family of high
performance clock solutions from ICS. The
ICS81006I works in conjunction with a
pullable crystal to generate an output clock over the
range of 12MHz - 40MHz and has 6 LVCMOS outputs,
effectively integrating a fanout buffer function.
The frequency of the VCXO is adjusted by the VC control
voltage input. The output range is ±100ppm around the
nominal crystal frequency. The VC control voltage range
is 0 - V . The device is packaged in a small 4mm x 4mm
DD
VFQFN package and is ideal for use on space
constrained boards typically encountered in ADSL/
VDSL applications.
FEATURES
• Six LVCMOS/LVTTL outputs, 20Ω nominal
output impedance
• Output Q5 can be selected for ÷1 or ÷2 frequency relative
to the crystal frequency
• Output frequency range: 12MHz to 40MHz
• Crystal pull range: ± 90ppm (typical)
• Synchronous output enable places outputs in High-Z state
• On-chip filter on VIN to suppress noise modulation of VCXO
• VDD/VDDO combinations
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V
• 4mm x 4mm 20 Lead VFQFN package is ideal for space
constrained designs
• -40°C to 85°C ambient operating temperature
• Available in both standard and lead-free RoHS compliant
packages
BLOCK DIAGRAM
OE0 (Pullup)
VC LP Filter
SYNC
XTAL_IN
XTAL_OUT
VCXO
DIV_SEL_Q5 (Pulldown)
0: ÷1
1: ÷2
PIN ASSIGNMENT
Q0 20 19 18 17 16
XTAL_IN 1
15 GND
XTAL_OUT 2
14 Q2
Q1
VDD 3
1 3 VDDO
VC 4
12 Q3
Q2
DIV_SEL_Q5 5
11 GND
6 7 8 9 10
Q3
ICS81006I
20-Lead VFQFN
Q4 4mm x 4mm x 0.95 package body
K Package
Top View
Q5
OE1 (Pullup)
SYNC
81006AKI
www.icst.com/products/hiperclocks.html
1
REV. A JANUARY 19, 2006
1 page  
Integrated
Circuit
Systems, Inc.
ICS81006I
VCXO-TO-6 LVCMOS OUTPUTS
TABLE 4D. AC CHARACTERISTICS, VDD = VDDO = 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum
fOUT
tjit(Ø)
Output Frequency
RMS Phase Jitter (Random);
NOTE 1
Integration Range: 1kHz-1MHz
12 19.44 40
0.28
tsk(o)
Output Skew;
NOTE 2, 3
Q0:Q4
Q0:Q5
DIV_SEL_Q5 = ÷1
25
105
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
300
45
NOTE 1: Please refer to the Phase Noise Plot.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential cross points.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
800
55
Units
MHz
ps
ps
ps
ps
%
TABLE 4E. AC CHARACTERISTICS, VDD = 2.5V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum
fOUT
tjit(Ø)
Output Frequency
RMS Phase Jitter (Random);
NOTE 1
Integration Range: 1kHz-1MHz
12 19.44 40
0.26
tsk(o)
Output Skew;
NOTE 2, 3
Q0:Q4
Q0:Q5
DIV_SEL_Q5 = ÷1
40
185
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
450
40
NOTE 1: Please refer to the Phase Noise Plot.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential cross points.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
1400
60
Units
MHz
ps
ps
ps
ps
%
81006AKI
www.icst.com/products/hiperclocks.html
5
REV. A JANUARY 19, 2006
5 Page 
Integrated
Circuit
Systems, Inc.
ICS81006I
VCXO-TO-6 LVCMOS OUTPUTS
RELIABILITY INFORMATION
TABLE 7. θJAVS. AIR FLOW TABLE FOR 20 LEAD VFQFN
θJA by Velocity (Meters Per Second)
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
0
141.7°C/W
38.5°C/W
1
126.0°C/W
35.0°C/W
2.5
116.9°C/W
33.4°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 ICS81006I is: 983
81006AKI
www.icst.com/products/hiperclocks.html
11
REV. A JANUARY 19, 2006
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ICS81006I.PDF ] | |
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