ICS650-05
HDTV Clock Synthesizer
MDS 650-05 B
1
Revision 100301
Integrated Circuit Systems 525 Race Street San Jose CA 95126 (408) 295-9800tel www.icst.com
The ICS650-05 is a low cost, low jitter, high
performance clock synthesizer designed to produce
74.175824 MHz and 74.250000 MHz as necessary for
HDTV applications. Using our patented analog Phase-
Locked Loop (PLL) techniques, the device uses a
27.0 MHz clock or fundamental crystal input to produce
buffered, fixed clocks and a selectable frame rate clock
for HDTV systems.
Block Diagram
Description
Features
Packaged in 20 pin tiny SSOP (QSOP)
Input Frequency of 27.0 MHz
Zero ppm synthesis error in output clocks
Provides fixed 13.5 MHz, dual 27.0 MHz, and
54.0 MHz output clocks with a selectable Frame
Rate Clock of 74.175824 MHz or 74.250000 MHz
Ideal for HDTV applications
3.3 V or 5.0 V operating voltage.
27.0 MHz
Input
Buffer/Crystal
Oscillator
Clock
Synthesis
and
Control
Circuit
Output
Buffer
Output
Buffer
Output
Buffer
27.0 MHz
Output
Buffer
Output
Buffer
FRS
27 MHz
FRCLK
54.0 MHz
13.5 MHz
OE (all outputs)
VDD
GND
5
5
X1/ICLK
X2
Crystal
or Clock
Input
ICS650-05
HDTV Clock Synthesizer
MDS 650-05 B
2
Revision 100301
Integrated Circuit Systems 525 Race Street San Jose CA 95126 (408) 295-9800tel www.icst.com
Pin #
Name
Type
Description
1
VDD
P
Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
2
X2
XO
Crystal connection to a 27.0 MHz crystal or leave unconnected for clock input
3
X1/ICLK
XI
Crystal connection. Connect to a 27.0 MHz fundamental mode crystal or clock input.
4
VDD
P
Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
5
VDD
P
Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
6
GND
P
Connect to ground.
7
NC
-
No Connect. Do not connect anything to this pin.
8
27M
O
27 MHz buffered reference output.
9
13.5M
O
13.5 MHz clock output.
10
GND
P
Connect to ground.
11
GND
P
Connect to ground.
12
27M
O
27 MHz buffered clock output.
13
54M
O
54 MHz buffered clock output.
14
GND
P
Connect to ground.
15
GND
P
Connect to ground.
16
VDD
P
Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
17
FRCLK
O
Frame Rate Clock as shown on table.
18
FRS
I
Frame Rate Frequency Select input pin. Determines FRCLK output as shown on table.
19
OE
I
Output Enable. Tri-states all clocks when low.
20
VDD
P
Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
Pin Descriptions
Key: I = Input with internal pull-up; O = output; P = power supply connection; XI, XO = crystal connections
1
16
2
3
4
15
14
13
VDD
NC
X2
VDD
20 pin SSOP (QSOP)
5
6
7
8
12
11
10
9
GND
OE
X1/ICLK
VDD
FRS
VDD
FRCLK
27M
GND
13.5M
27M
18
17
19
20
GND
VDD
54M
GND
GND
Pin Assignment
FRCLK Output Select Table (in MHz)
FRS Pin 18
FRCLK Pin 17
0
74.175824
1
74.250000
ICS650-05
HDTV Clock Synthesizer
MDS 650-05 B
3
Revision 100301
Integrated Circuit Systems 525 Race Street San Jose CA 95126 (408) 295-9800tel www.icst.com
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note 1)
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply voltage, VDD
Referenced to GND
7
V
Inputs and Clock Outputs
Referenced to GND
-0.5
VDD+0.5
V
Ambient Operating Temperature
0
70
C
Soldering Temperature
Max of 10 seconds
260
C
Storage temperature
-65
150
C
DC CHARACTERISTICS (VDD = 3.3V or 5V unless noted)
DC CHARACTERISTICS (VDD = 3.3V or 5V unless noted)
Operating Voltage, VDD
3.0
5.5
V
Input High Voltage, VIH
X1/ICLK
VDD/2+1
V
Input Low Voltage, VIL
XI/ICLK
VDD/2-1
V
Input High Voltage, VIH
FRS, OE
2
V
Input Low Voltage, VIL
FRS, OE
0.8
V
Output High Voltage, VOH
VDD=3.3V, IOH=-8mA
2.4
V
Output Low Voltage, VOL
VDD=3.3V, IOL=8mA
0.4
V
Output High Voltage, VOH, VDD = 3.3 or 5V IOH=-8mA
VDD-0.4
V
Operating Supply Current, IDD, at 5V
No Load
26
mA
Operating Supply Current, IDD, at 3.3V
No Load
14
mA
Short Circuit Current, VDD = 3.3 V
Each output
50
mA
Input Capacitance
Except X1
5
pF
AC CHARACTERISTICS (VDD = 3.3V or 5V unless noted)
AC CHARACTERISTICS (VDD = 3.3V or 5V unless noted)
Input Crystal or Clock Frequency
27
MHz
Output Clocks Accuracy (synthesis error)
All clocks
1
ppm
Output Clock Rise Time
0.8 to 2.0V
1.5
ns
Output Clock Fall Time
2.0 to 0.8V
1.5
ns
Output Clock Duty Cycle
At VDD/2
40
50
60
%
One Sigma Jitter
VDD = 3.3V, 13.5M,
FRCLK, 27M (pin 12)
50
ps
VDD=3.3V, 27M (pin8),
54M
125
ps
VDD=5.0V, except 27M
(pin8)
50
ps
VDD = 5.0V, 27M (pin 8)
65
ps
Absolute Clock Period Jitter
VDD=3.3V, except 27M
(pin 8), 54M
125
ps
VDD=3.3V, 27M (pin 8),
54M
350
ps
VDD=5.0V
175
ps
Electrical Specifications
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
A minimum number of external components are required for proper operation. A decoupling capacitor of 0.01 F
should be connected between VDD and GND on pins 4 and 6, and 16 and 14, and a 33
terminating resistor may
be used on each clock output if the trace is longer than 1 inch.
ICS650-05
HDTV Clock Synthesizer
MDS 650-05 B
4
Revision 100301
Integrated Circuit Systems 525 Race Street San Jose CA 95126 (408) 295-9800tel www.icst.com
Package Outline and Package Dimensions
Ordering Information
Part/Order Number
Marking
Package
Shipping
Temperature
ICS650R-05
ICS650R-05
20 pin SSOP
Tubes
0 to 70 C
ICS650R-05T
ICS650R-05
20 pin SSOP
Tape and Reel
0 to 70 C
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems,
Incorporated (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.
b
D
E1
E
e
A1
c
A
L
INDEX
AREA
1
2
2 0 p i n S S O P
Inches
Inches
Millimeters
Millimeters
Symbol
Min
Max
Min
Max
A
0.053
0.069
1.35
1.75
A1
0.004
0.010
0.10
0.25
b
0.008
0.012
0.20
0.30
c
0.007
0.010
0.18
0.25
D
0.337
0.344
8.55
8.75
e .025 BSC
.025 BSC 0.635 BSC
0.635 BSC
E
0.228
0.244
5.80
6.20
E1
0.150
0.157
3.80
4.00
L
0.016
0.050
0.40
1.27
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