ICS503 [ICSI]
LOCO⑩ PLL Clock Multiplier; LOCO ™ PLL时钟乘法器
| 型号： | ICS503 |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | LOCO⑩ PLL Clock Multiplier |
| 文件： | 总4页 (文件大小：64K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS503
LOCO™ PLL Clock Multiplier
Description
Features
• Packaged as 8 pin SOIC or die
The ICS503 is a member of the LOCO™ family,
the most cost effective way to generate a high
quality, high frequency clock output from a low
frequency crystal or clock input. The name LOCO
stands for LOw Cost Oscillator, as it is designed
to replace crystals and 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 160 MHz.
• ICS’ lowest cost PLL clock family
• Generates 16.9344 MHz for stereo codecs from
the 14.31818 MHz motherboard clock
• Can be cost effective in replacing a single
surface-mount crystal
• Can be driven by other 5xx series
• Input crystal frequency of 5 - 27 MHz
• Input clock frequency of 2 - 50 MHz
• Output clock frequencies up to 160 MHz
• Low jitter - 50 ps one sigma
Stored in the chip’s ROM is the ability to generate
9 different multiplication factors, allowing one
chip to be used in two or three different
applications (see page 2).
• Duty cycle of 45/55 up to 160 MHz
• Operating voltages of 3.0 to 5.5V
• Full CMOS level outputs with 25mA drive
capability at TTL levels
• Advanced, low power CMOS process
Block Diagram
VDD GND
S0
S1
PLL
Clock Multiplier
Circuitry
and
Output
Buffer
Crystal or
clock input
CLK
X1/ICLK
Crystal
Oscillator
ROM
X2
Optional crystal capacitors
MDS 503 A
1
Revision 111000
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS503
LOCO™ PLL Clock Multiplier
Pin Assignment
1
2
3
4
8
7
6
5
X1/ICLK
VDD
GND
NC
X2
S1
S0
CLK
Clock Decoding Table (MHz)
S1
0
S0 Multiplier Typical Input (MHz) CLK (MHz) Input Range (MHz) at 5V Input Range (MHz) at 3.3V
0
M
1
10
10
100
160
2 £ Input £ 16
2 £ Input £ 10
20 £ Input £ 50
10 £ Input £ 50
10 £ Input £ 50
10 £ Input £ 50
14 £ Input £ 28
14 £ Input £ 30
5 £ Input £ 38
2 £ Input £ 10
2 £ Input £ 6
0
16
10
0
1.1111
2.4444
2.4164
2.4
27
30.00
35.00
34.60
34.36
80.00
16.934
60.00
20 £ Input £ 40
10 £ Input £ 40
10 £ Input £ 40
10 £ Input £ 40
14 £ Input £ 18
14 £ Input £ 30
5 £ Input £ 24
M
M
M
1
0
14.31818
14.31818
14.31818
14.31818
14.31818
14.31818
M
1
0
5.5873
1.1827
4.1905
1
M
1
1
0 = connect directly to ground, 1 = connect directly to VDD, M = leave unconnected (floating).
Pin Descriptions
Number
Name
X1/ICLK
VDD
GND
NC
Type Description
1
2
3
4
5
6
7
8
I
P
Crystal connection or clock input.
Connect to +3.3V or +5V.
P
Connect to ground.
-
Nothing is connected to this pin.
CLK
S0
O
TI
TI
O
Clock output per Table above. Output frequency equals input frequency times multiplier.
Select 0 for output clock. Connect to GND or VDD or float.
Select 1 for output clock. Connect to GND or VDD or float.
Crystal connection. Leave unconnected for clock input.
S1
X2
Key: I = Input, TI = Tri-Level Input, O = output, P = power supply connection
MDS 503 A
2
Revision 111000
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS503
LOCO™ PLL Clock Multiplier
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (stresses beyond these can permanently damage the device)
Supply Voltage, VDD
Inputs
Referenced to GND
Referenced to GND
Referenced to GND
7
VDD+0.5
VDD+0.5
70
V
V
-0.5
-0.5
0
Clock Output
V
Ambient Operating Temperature
Soldering Temperature
Storage temperature
°C
°C
°C
Max of 10 seconds
260
-65
150
DC CHARACTERISTICS (VDD = 5.0V unless otherwise noted)
Operating Voltage, VDD
3
5.5
(VDD/2)-1
0.5
V
V
Input High Voltage, VIH, ICLK only
Input Low Voltage, VIL, ICLK only
Input High Voltage, VIH
ICLK (Pin 1)
ICLK (Pin 1)
S1, S0
(VDD/2)+1
VDD/2
VDD/2
V
VDD-0.5
V
Input Low Voltage, VIL
S1, S0
V
Output High Voltage, VOH, CMOS high
Output High Voltage, VOH
IOH=-4mA
IOH=-25mA
IOL=25mA
VDD-0.4
2.4
V
V
Output Low Voltage, VOL
0.4
V
IDD Operating Supply Current, 14 MHz crystal No Load, 80MHz
16
±70
4
mA
mA
pF
Short Circuit Current
CLK output
Pins 6, 7
Input Capacitance, S1, S0
AC CHARACTERISTICS (VDD = 5.0V unless otherwise noted)
Input Frequency, crystal input
Input Frequency, clock input
Output Frequency
See table on page 2
See table on page 2
VDD = 4.5 to 5.5V
VDD = 3.0 to 3.6V
0.8 to 2.0V
5
27
50
MH z
MH z
MH z
MH z
ns
2
14
14
160
100
Output Frequency
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
Absolute Clock Period Jitter
One Sigma Clock Period Jitter
1
1
2.0 to 0.8V
ns
at VDD/2
45
49 to 51
±120
50
55
%
Deviation from mean
ps
ps
MDS 503 A
3
Revision 111000
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS503
LOCO™ PLL Clock Multiplier
External Components / Crystal Selection
The ICS503 requires a 0.01µF decoupling capacitor to be connected between VDD and GND. It must be
connected close to the ICS503 to minimize lead inductance. No external power supply filtering is required
for this device. A 33Wterminating resistor can be used next to the CLK pin. The total on-chip capacitance
is approximately 6 pF, so a parallel resonant, fundamental mode crystal should be used. If exact tuning of
the frequency is required, crystal capacitors should be connected from each of the pins X1 and X2 to
ground as shown in the Block Diagram on page 1. The value (in pF) of these crystal caps should be equal
to (C -6)*2, where C is the crystal load capacitance in pF. These external capacitors are only required for
L
L
applications where the exact frequency is critical. For a clock input, connect to X1 and leave X2
unconnected (no capacitors on either).
Package Outline and Package Dimensions
8 pin SOIC
E
H
Inches
Millimeters
Min Max
0.055 0.068 1.397 1.7272
Pin 1
Symbol Min
Max
A
b
0.013 0.019 0.330
0.185 0.200 4.699
0.150 0.160 3.810
0.225 0.245 5.715
0.483
5.080
4.064
6.223
D
E
H
e
h x 45°
D
.050 BSC
0.015
0.01
1.27 BSC
A
Q
h
0.381
0.254
c
Q
0.004
0.102
b
e
Ordering Information
Part/Order Number
ICS503M
Marking
ICS503M
ICS503M
Package
8 pin SOIC
8 pin SOIC on tape and reel
Temperature
0-70°C
ICS503MT
0-70°C
While the information presented herein has been checked for both accuracy and reliability, ICS/MicroClock 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/MicroClock. ICS/MicroClock reserves the right to change any circuitry or specifications without notice. ICS/MicroClock
does not authorize or warrant any ICS/MicroClock product for use in life support devices or critical medical instruments.
LOCO is a trademark of ICS
MDS 503 A
4
Revision 111000
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com
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