ICS601R-25IT [ICSI]
LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER; 低相位噪声1至5时钟乘法器
| 型号： | ICS601R-25IT |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER |
| 文件： | 总5页 (文件大小：141K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICS601-25
LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER
Description
Features
The ICS601-25 is a low-cost, low phase noise, high
performance clock synthesizer for applications which
require low phase noise, low jitter, and low skew fanout.
It is ICS’ lowest phase noise multiplier, and also the
lowest CMOS part in the industry. Using ICS’ patented
analong and digital Phase Locked Loop (PLL)
• Packaged in 20-pin SSOP
• Uses fundamental 10 - 27 MHz crystal or clock
• Output clocks up to 156 MHz
• Low phase noise: -132 dBc/Hz at 10 kHz
• Five low skew (<250 ps) outputs
techniques, the chip accepts a 10-27 MHz crystal or
clock input, and produces output clocks up to 156 MHz.
• Low jitter - 18 ps one sigma at 125 MHz
• Full swing CMOS outputs with 25 mA drive capability
at TTL levels
• Powerdown mode lowers power consumption
• Advanced, low power, sub-micron CMOS process
• Industrial temperature version available
• Available in Pb (lead) free package
• Operating voltage of 3.3 V
Block Diagram
VDD
5
Reference
Divider
Phase
Comparator
Charge
Pump
Loop
Filter
VCO
CLK1
CLK2
CLK3
CLK4
CLK5
X1/ICLK
X2
VCO
Divide
Crystal
Oscillator
Crystal or
clock input
ROM Based
Multipliers
3
4
GND
S3:0
PD
MDS 601-25 C
1
Revision 071505
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
ICS601-25
LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER
Pin Assignment
Output Select Table
S3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
S2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
S1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
S0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Multiplier
X2
X1/ICLK
VDD
S0
1
20
19
18
17
16
15
14
13
12
11
x1
GND
VDD
CLK2
CLK3
GND
CLK4
CLK5
VDD
CLK1
2
x2
3
x3
VDD
VDD
S1
4
x4
5
x5
6
x6
GND
S3
7
x8
8
x16
PD
9
x7
S2
10
x9
x10
20 Pin (150 mil) SSOP
x11
x12
output tristates
x14
x15
Pin Descriptions
Pin
Pin
Pin
Pin Description
Number
Name
Type
1
X1/ICLK
XI
Crystal or clock input. Connect to a 10-27 MHz fundamental parallel mode
crystal or clock input.
2
3
VDD
S0
Power Connect to +3.3 V.
Input
Select pin 0. Internal pull-up.
4, 5
6
VDD
S1
Power Connect to +3.3 V.
Input
Select pin 1. Internal pull-up.
7
GND
S3
Power Connect to ground.
8
Input
Input
Select pin 3. Internal pull-down.
9
PD
Powerdown when held low. Internal pull-up.
Select pin 2. Internal pull-up.
10
11
12
13
14
15
16
17
18
19
20
S2
Input
CLK1
VDD
CLK5
CLK4
GND
CLK3
CLK2
VDD
GND
X2
Output Clock output.
Power Connect to +3.3 V.
Output Clock output.
Output Clock output.
Power Connect to ground.
Output Clock output.
Output Clock output.
Power Connect to +3.3 V.
Power Connect to ground.
XO
Crystal connection. Connect to a 10-27 MHz fundamental parallel mode
crystal or leave unconnected for clock input.
MDS 601-25 C
2
Revision 071505
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
ICS601-25
LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER
External Components
The ICS601-25 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.01 µF and 0.1 µF should be connected between VDD and GND, as close to the part as
possible. A 33Ω series terminating resistor should be used on each clock output. The crystal must be
connected as close to the chip as possible. The crystal should be fundamental mode, parallel resonant. Do
not use third overtone. For exact tuning when using a crystal, capacitors should be connected from pins X1
to ground and X2 to ground. In general, the value of these capacitors is given by the following equation,
where CL is the crystal load capacitance: Crystal caps (pF) = (CL-5) x 2. So for a crystal with 16 pF load
capacitance, two 22 pF caps can be used. For any given board layout, ICS can measure the board
capacitance and recommend the exact capacitance value to use.
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS601-25. These ratings,
which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of
the device at these or any other conditions above those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can
affect product reliability. Electrical parameters are guaranteed only over the recommended operating
temperature range.
Item
Rating
Supply Voltage, VDD
All Inputs and Outputs
7 V
-0.5 V to VDD+0.5 V
0 to +70 °C
-40 to +85 °C
-65 to +150 °C
125 °C
Ambient Operating Temperature, Commercial version
Ambient Operating Temperature, Industrial version
Storage Temperature
Junction Temperature
Soldering Temperature
260 °C
Recommended Operation Conditions
Parameter
Min.
Typ.
Max.
+70
Units
°C
Ambient Operating Temperature (commercial)
Ambient Operating Temperature (industrial)
Power Supply Voltage (measured in respect to GND)
0
-40
+85
°C
+2.97
+3.63
V
DC Electrical Characteristics
VDD=3.3 V 10ꢀ, Ambient temperature -40 to +85°C
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Operating Voltage
VDD
2.97
3.63
V
V
V
Input High Voltage
Input Low Voltage
V
X1/ICLK pin only VDD/2+1
X1/ICLK pin only
IH
V
VDD/2-1
IL
MDS 601-25 C
3
Revision 071505
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
ICS601-25
LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER
DC Electrical Characteristics (continued)
Parameter
Input High Voltage
Input Low Voltage
Symbol
Conditions
Min.
Typ.
Max.
VDD
0.8
Units
V
2
V
V
V
IH
V
IL
Output High Voltage, CMOS
level
V
I
= -4 mA
VDD-0.4
2.4
OH
OH
Output High Voltage
Output Low Voltage
Operating Supply Current
Short Circuit Current
Input Capacitance
V
I
I
= -12 mA
= 12 mA
V
V
OH
OL
V
0.4
60
OL
OL
IDD
No load, 125 MHz
Each output
45
60
5
mA
mA
pF
Ω
I
40
OS
Select pins
Output Impedance
Z
20
510
OUT
On Chip Pull-up Resistor
R
S2, S1, S0, PD
pins
kΩ
PU
On Chip Pull-down Resistor
R
S3 pin
240
kΩ
PD
AC Electrical Characteristics
VDD = 3.3V 10ꢀ, Ambient Temperature -40 to +85° C
Parameter Symbol Conditions
Min.
Typ. Max. Units
Input Frequency
10
27
156
1.5
1.5
55
MHz
MHz
ns
Output Frequency
Output Rise Time
Output Fall Time
At 3.3V
t
0.8 to 2.0 V, Note 1
0.8 to 2.0 V, Note 1
At VDD/2, Note 1
Note 1
OR
t
ns
OF
Output Clock Duty Cycle
45
50
50
%
Maximum Absolute jitter, short
term, 125 MHz
75
ps
Maximum jitter, one sigma, 125
MHz (x5)
Note 1
18
25
ps
Phase Noise, relative to carrier,
125 MHz (x5)
100 Hz offset
1 kHz
-90
-95
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps
Phase Noise, relative to carrier,
125 MHz (x5)
-115
-118
-115
-120
-123
-120
Phase Noise, relative to carrier,
125 MHz (x5)
10 kHz offset
100 kHz offset
Phase Noise, relative to carrier,
125 MHz (x5)
Output to Output Skew
25M in, 125M out,
Note 1
250
Note 1: Measured with 15 pF load
MDS 601-25 C
4
Revision 071505
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
ICS601-25
LOW PHASE NOISE 1 TO 5 CLOCK MULTIPLIER
Package Outline and Package Dimensions (20-pin SSOP, 150 Mil. Narrow Body)
Package dimensions are kept current with JEDEC Publication No. 95
Millimeters
Inches*
20
Symbol
Min
Max
Min
.0532
Max
A
A1
A2
b
1.35
0.10
--
1.75
0.25
1.50
0.30
0.25
8.75
6.20
4.00
.0688
.0040 0.0098
--
.059
0.012
.010
E1
E
INDEX
AREA
0.20
0.18
8.55
5.80
3.80
0.008
.007
.337
.228
.1497
C
D
.344
E
.244
1
2
E1
e
.1574
0.635 Basic
0.025 Basic
D
L
0.40
0°
1.27
8°
.016
0°
.050
8°
α
aaa
--
0.10
--
0.004
A
A2
*For reference only. Controlling dimensions in mm.
A1
c
- C -
e
SEATING
PLANE
b
L
aaa C
Ordering Information
Part / Order Number
Marking
Shipping Packaging
Tubes
Package
Temperature
0 to +70° C
0 to +70° C
-40 to 85° C
-40 to 85° C
0 to +70° C
0 to +70° C
-40 to 85° C
-40 to 85° C
ICS601R-25
ICS601R-25T
ICS601R-25I
ICS601R-25
ICS601R-25
ICS601R-25I
ICS601R-25I
601R-25LF
601R-25LF
601R-25ILF
601R-25ILF
20-pin SSOP
20-pin SSOP
20-pin SSOP
20-pin SSOP
20-pin SSOP
20-pin SSOP
20-pin SSOP
20-pin SSOP
Tape and Reel
Tubes
ICS601R-25IT
ICS601R-25LF
ICS601R-25LFT
ICS601R-25ILF
ICS601R-25ILFT
Tape and Reel
Tubes
Tape and Reel
Tubes
Tape and Reel
Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (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.
MDS 601-25 C
5
Revision 071505
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
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