ICS650R-11ITLFT [IDT]
Clock Generator, 133.33MHz, CMOS, PDSO20, 0.150 INCH, LEAD FREE, SSOP-20;
| 型号： | ICS650R-11ITLFT |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Clock Generator, 133.33MHz, CMOS, PDSO20, 0.150 INCH, LEAD FREE, SSOP-20 时钟 光电二极管 外围集成电路 晶体 |
| 文件： | 总4页 (文件大小：485K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY INFORMATION
ICS650-11B
BroadCom Networking Clock Synthesizer
Description
Features
The ICS650-11B is a low cost, low jitter, high
performance clock synthesizer customized for
BroadCom. Using analog Phase-Locked Loop
(PLL) techniques, the device accepts a 25.0 MHz
clock or fundamental mode crystal input to
produce multiple output clocks of 25.0 MHz,
33.33 MHz, 66.66 MHz, 100.0 MHz, and
133.33 MHz. All output clocks are frequency
locked together. The ICS650-11B outputs all
have 0 ppm synthesis error.
• Packaged in 20 pin narrow SSOP (Pb free available)
• 25.00 MHz fundamental crystal or clock input
• Five fixed output clocks of 25.0 MHz, 33.33 MHz,
66.66 MHz, 100.0 MHz, and 133.33 MHz
• Zero ppm synthesis error in all clocks
• Ideal for BroadCom BCM5600/BCM5400 chipset
• Full CMOS output swing
• Advanced, low power, sub-micron CMOS process
• 3.0V to 5.5V operating voltage
• Industrial temperature range
Block Diagram
VDD GND
3
5
Output
33.33 MHz
Buffer
Output
66.66 MHz
Buffer
Clock Synthesis
and Control
Circuitry
Output
Buffer
100.0 MHz
Output
Buffer
25.00 MHz
crystal or clock
X1
133.33 MHz
Clock
Buffer/
Crystal
Output
Buffer
25.00 MHz
Oscillator
X2
Optional crystal capacitors are shown and may be required for tuning of initial accuracy (determined once per board).
MDS 650-11B B
1
Revision 111404
Printed 11/14/04
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel• www.icst.com
PRELIMINARY INFORMATION
ICS650-11B
BroadCom Networking Clock Synthesizer
Pin Assignment
GND
X2
1
2
3
4
5
20
19
18
17
16
15
14
13
12
11
D C
D C
X1
133.33M
33.33M
VDD
VDD
GND
25M
66.66M
GND
VDD
GND
GND
D C
D C
D C
6
7
8
9
100M 10
20 pin (150 mil) SSOP
Pin Descriptions
Number
Name
GND
X2
Type Description
1
P
XO
XI
P
Connect to ground.
2
Crystal connection. Connect to 25 MHz crystal or leave unconnected for a clock input.
Crystal connection. Connect to 25 MHz fundamental crystal or clock input.
Connect to +3.3 V or +5 V. Must be same as other VDDs.
Connect to ground.
3
X1
4
VDD
GND
GND
DC
5
P
6
P
Connect to ground.
7
-
Don't Connect. Do not connect anything to this pin.
Don't Connect. Do not connect anything to this pin.
Don't Connect. Do not connect anything to this pin.
100.0 MHz clock output.
8
DC
-
9
DC
-
10
11
12
13
14
15
16
17
18
19
20
100M
GND
66.66M
25M
GND
VDD
VDD
33.33M
133.33M
DC
O
P
Connect to ground.
O
O
P
66.66 MHz clock output.
25.0 MHz clock output.
Connect to ground.
P
Connect to +3.3V or +5V. Must be same as other VDDs.
Connect to +3.3 V or +5 V. Must be same as other VDDs.
33.33 MHz clock output.
P
O
O
-
133.33 MHz clock output.
Don't Connect. Do not connect anything to this pin.
Don't Connect. Do not connect an thing to this pin.
DC
-
Key: XI, XO = crystal connections; O = Output; P = power supply connection
MDS 650-11B B
2
Revision111404
Printed 11/14/04
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel• www.icst.com
PRELIMINARY INFORMATION
ICS650-11B
BroadCom Networking Clock Synthesizer
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum Units
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply voltage, VDD
Referenced to GND
7
VDD+0.5
85
V
V
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage temperature
Referenced to GND
Max of 20 seconds
-0.5
-40
°C
°C
°C
260
-65
150
DC CHARACTERISTICS (VDD = 3.3V unless noted)
Operating Voltage, VDD
3
5.5
V
V
Input High Voltage, VIH, X1 pin only
Input Low Voltage, VIL, X1 pin only
VDD/2 + 1
VDD/2
VDD/2 VDD/2 - 1
V
Output High Voltage, VOH
Output Low Voltage, VOL
IOH=-12mA
IOL=12mA
IOH=-8mA
No Load
2.4
V
0.4
V
Output High Voltage, VOH, CMOS level
Operating Supply Current, IDD
Short Circuit Current
VDD-0.4
V
35
mA
mA
Each output
±50
AC CHARACTERISTICS (VDD = 3.3V unless noted)
Input Frequency
25.000
1.5
MH z
ns
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle, except 25 MHz
Frequency error
0.8 to 2.0V
2.0 to 0.8V
1.5
ns
At VDD/2
45
50
55
0
%
All clocks
ppm
ps
Absolute Jitter, short term
Variation from mean
175
Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged
exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability.
External Components
The ICS650-11B requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.01µF should be connected between each VDD and GND on Pins 4 and 6, and Pins 16 and
14, as close to the ICS650-11B as possible. A series termination resistor of 33 Ω may be used for each clock
output. The 25.00 MHz crystal must be connected as close to the chip as possible. The crystal should be a
fundamental mode (do not use third overtone), parallel resonant. Crystal capacitors should be connected
from pins X1 to ground and X2 to ground to optimize the initial accuracy. The value of these capacitors is
given by the following equation, where C is the crystal load capacitance: Crystal caps (pF) = (C -6) x 2. So
L
L
for a crystal with 16 pF load capacitance, two 20 pF caps should be used.
MDS 650-11B B
3
Revision 111404
Printed 11/14/04
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel• www.icst.com
PRELIMINARY INFORMATION
ICS650-11B
BroadCom Networking Clock Synthesizer
Package Outline and Package Dimensions
(For current dimensional specifications, see JEDEC Publication No. 95.)
20 pin SSOP
Inches
Symbol Min
Millimeters
Max
0.053 0.069
Min
1.35
Max
A
A1
b
1.75
E1
E
0.004 0.010 0.102
0.008 0.012 0.203
0.007 0.010 0.191
0.337 0.344 8.560
0.254
0.305
0.254
8.738
c
D
e
.025 BSC
0.635 BSC
E
0.228 0.244 5.791
0.150 0.157 3.810
0.016 0.050 0.406
6.198
3.988
1.270
E1
L
D
A
A1
c
b
L
e
Ordering Information
Part/Order Number
ICS650R-11I
Marking
Shipping packaging
tubes
Package
Temperature
-40 to +85°C
-40 to +85°C
ICS650R-11I
ICS650R-11I
20 pin SSOP
20 pin SSOP
ICS650R-11IT
tape and reel
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Inc (ICS) assumes no responsibility for either its use or for
the 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.
ICS650R-11ILF
ICS650R-11ILFT
ICS650R-11ILF
ICS650R-11ILF
tubes
-40 to +85°C
-40 to +85°C
20 pin SSOP
20 pin SSOP
tape and reel
MDS 650-11B B
4
Revision 111404
Printed 11/14/04
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel• www.icst.com
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