ICS512MILFT [IDT]
Clock Generator, 160MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8;
| 型号： | ICS512MILFT |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Clock Generator, 160MHz, CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8 时钟 光电二极管 外围集成电路 晶体 |
| 文件： | 总7页 (文件大小：131K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATASHEET
LOCO™ PLL CLOCK MULTIPLIER
ICS512
Description
Features
The ICS512 is the most cost effective way to generate
a high-quality, high frequency clock output and a
reference clock from a lower frequency crystal or clock
input. The name LOCO stands for Low Cost Oscillator,
as it is designed to replace crystal oscillators in most
electronic systems. Using Phase-Locked-Loop (PLL)
techniques, the device uses a standard fundamental
mode, inexpensive crystal to produce output clocks up
to 200 MHz. With a reference output, this chip plus an
inexpensive crystal can replace two oscillators
• Packaged as 8-pin SOIC or die
• Pb (lead ) free package
• Upgrade of popular ICS502 with:
— changed multiplier table
— higher operating frequncies
• Zero ppm multiplication error
• Easy to cascade with other 5xx series
• Input crystal frequency of 5 - 27 MHz
• Input clock frequency of 2 - 50 MHz
• Output clock frequencies up to 200 MHz
• Compatible with all popular CPUs
Stored in the chip’s ROM is the ability to generate nine
different multiplication factors, allowing one chip to
output many common frequencies (see table on page
2).
This product is intended for clock generation. It has low
output jitter (variation in the output period), but input to
output skew and jitter are not defined or guaranteed.
For applications which require defined input to output
skew, use the ICS570B.
• Duty cycle of 45/55 up to 200 MHz
• Mask option for nine selectable frequencies
• Operating voltages of 3.0 to 5.5 V
• Industrial temperature version available
• Advanced, low power CMOS process
Block Diagram
VDD
PLL Clock
Synthesis
and Control
Circuitry
CLK
REF
2
S1, S0
X1/ICLK
Crystal or
Clock input
Crystal
Oscillator
X2
Optional crystal
capacitors
GND
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
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Pin Assignment
Clock Output Table
S1
S0
CLK
X1/ICLK
VDD
8
7
6
5
1
2
3
4
X2
0
0
0
M
1
4X input
5.333X input
5X input
S1
GND
S0
0
M
M
M
1
0
2.5X input
2X input
REF
CLK
M
1
8-pi n (150 mi l ) SOIC
3.333X input
6X input
0
1
M
1
3X input
1
8X input
0 = connect directly to ground
1 = connect directly to VDD
M = leave unconnected (floating)
Common Output Frequencies Example (MHz)
Output
Input
20
10
24
12
30
10
32
16
33.33
16.66
M,M
37.5
15
40
10
48
12
50
20
60
10
64
16
Selection (S1, S0)
M,M
M,M
1, M
M,M
M,0
0,0
0,0
M,0
1,0
0,0
Output
Input
66.66
20
72
12
75
25
80
10
83.33
25
90
15
100
20
120
15
125
25
133.3
25
150
25
Selection (S1, S0)
M,1
1,0
1,M
1,1
M,1
1,0
0,1
1,1
0,1
0,M
1,0
Note that all of the above are achieved using a common, inexpensive 10 MHz to 25 MHz crystal. Consult
IDT on how to achieve other output frequncies.
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
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Pin Descriptions
Pin
Pin
Pin Type
Pin Description
Number Name
1
2
3
4
5
6
7
8
XI/ICLK
VDD
GND
NC
Input
Power
Power
REF
Crystal connection or clock input.
Connect to +3.3 V or +5 V.
Connect to ground.
Buffered crystal oscillator output clock.
Clock output per table above.
CLK
S0
Output
Tri-level Input Mulitplier select pin 0. Connect to GND or VDD or float.
Tri-level Input Mulitplier select pin 1. Connect to GND or VDD or float.
S1
X2
Output
Crystal connection. Leave unconnected for clock input.
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
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Crystal Load Capacitors
External Components
The device crystal connections should include pads for
small capacitors from X1 to ground and from X2 to
ground. These capacitors are used to adjust the stray
capacitance of the board to match the nominally
required crystal load capacitance. Because load
capacitance can only be increased in this trimming
process, it is important to keep stray capacitance to a
minimum by using very short PCB traces (and no vias)
between the crystal and device. Crystal capacitors, if
needed, must be connected from each of the pins X1
and X2 to ground.
Decoupling Capacitor
As with any high-performance mixed-signal IC, the
ICS512 must be isolated from system power supply
noise to perform optimally.
A decoupling capacitor of 0.01µF must be connected
between VDD and GND. It must be connected close to
the ICS512 to minimize lead inductance. No external
power supply filtering is required for the ICS512.
Series Termination Resistor
The value (in pF) of these crystal caps should equal (C
A 33Ωterminating resistor can be used next to the CLK
pin. The total on-chip capacitance is approximately 12
pF. A parallel resonant, fundamental mode crystal
should be used.
L
-12 pF)*2. In this equation, C = crystal load capacitance
L
in pF. Example: For a crystal with a 16 pF load
capacitance, each crystal capacitor would be 8 pF
[(16-12) x 2] = 8.
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS512. These ratings, which
are standard values for IDT 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
Ambient Operating Temperature (commercial)
Ambient Operating Temperature (industrial)
Storage Temperature
-40 to +85° C
-65 to +150° C
260°C
Soldering Temperature
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
+3.0
+85
° C
+5.0
V
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
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DC Electrical Characteristics
VDD=3.3 V 5% , Ambient temperature 0 to +70°C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Operating Voltage
VDD
3
5.5
V
V
Input High Voltage, ICLK only
Input Low Voltage, ICLK only
Input High Voltage
V
ICLK (pin 1)
ICLK (pin 1)
S0, S1
(VDD/2)+1 VDD/2
IH
V
VDD/2 (VDD/2)-1
V
IL
V
VDD-0.5
V
IH
Input Low Voltage
V
S0, S1
0.5
V
IL
Output High Voltage, CMOS high
Output High Voltage
V
V
I
I
I
= -8 mA
= -12 mA
= 12 mA
VDD-0.4
2.4
V
OH
OH
OH
OH
OL
V
Output Low Voltage
V
0.4
V
OL
IDD Operating Supply Current,
20 MHz crystal
No load, 100 MHz
9
mA
Short Circuit Current
CLK output
Pins 6, 7
+70
4
mA
pF
Input Capacitance, S1, S0
AC Electrical Characteristics
VDD=3.3 V 5%, Ambient Temperature 0 to +70° C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
5
Typ.
Max. Units
Input Frequency, crystal input
Input Frequency, clock input
Output Frequency, VDD = 4.5 to 5.5 V
F
F
27
50
MHz
MHz
MHz
MHz
MHz
MHz
ns
IN
IN
2
F
0 to +70°C
14
14
14
14
200
160
160
145
OUT
-40 to +85°C
0 to +70°C
-40 to +85°C
0.8 to 2.0 V
2.0 to 8.0V
at VDD/2
Output Frequency, VDD = 3.0 to 3.6 V
F
OUT
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
Absolute Clock Period Jitter
t
1
OR
t
1
ns
OF
OD
t
45
49-51
+200
55
%
t
Deviation from
mean
ps
ja
One Sigma Clock Period Jitter
t
80
ps
js
Note: The phase relationship between intput and output clocks can change at power up. For a fixed phase
relationship, see the ICS570 or the ICS527.
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
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Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body)
Package dimensions are kept current with JEDEC Publication No. 95
Millimeters
Inches*
8
Symbol
Min
Max
1.75
0.25
0.51
0.25
5.00
4.00
Min
Max
A
A1
B
C
D
E
e
1.35
0.10
0.33
0.19
4.80
3.80
.0532
.0040
.013
.0075
.1890
.1497
.0688
.0098
.020
.0098
.1968
.1574
E
H
INDEX
AREA
1.27 BASIC
0.050 BASIC
1
2
H
h
L
5.80
0.25
0.40
0°
6.20
0.50
1.27
8°
.2284
.010
.016
0°
.2440
.020
.050
8°
D
α
*For reference only. Controlling dimensions in mm.
A
h x 45
A1
C
- C -
e
SEATING
PLANE
B
L
.10 (.004)
C
Ordering Information
Part / Order Number
512MLF
Marking
512MLF
512MLF
512MILF
512MILF
Shipping packaging
Tubes
Package
8-pin SOIC
8-pin SOIC
8-pin SOIC
8-pin SOIC
Temperature
0 to +70° C
0 to +70° C
-40 to +85° C
-40 to +85° C
512MLFT
512MILF
512MILFT
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 Device Technology (IDT)
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 IDT. IDT reserves the right to change any
circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or
critical medical instruments.
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
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CLOCK MULTIPLIER
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For Sales
800-345-7015
For Tech Support
www.idt.com/go/clockhelp
408-284-8200
Fax: 408-284-2775
Corporate Headquarters
Integrated Device Technology, Inc.
www.idt.com
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trademarks used to identify products or services of their respective owners.
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