MK2716S [ICSI]
HDTV Clock Synthesizer; HDTV时钟合成器
| 型号： | MK2716S |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | HDTV Clock Synthesizer |
| 文件： | 总4页 (文件大小：61K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MK2716
HDTV Clock Synthesizer
ICR O CLOC K
Description
Features
• Packaged as 8 pin SOIC or die
• Input frequency of 27 MHz
The MK2716 is a low cost, low jitter, high
performance clock synthesizer designed to
produce the 74.176 MHz and 74.25 MHz clocks
necessary for HDTV systems. Using analog Phase-
Locked Loop (PLL) techniques, the device accepts
a 27 MHz clock or fundamental crystal input. The
zero ppm synthesis error exactly locks the display
to the digital stream.
• Zero ppm synthesis error in output clock
• 3.3 V or 5.0 V±10% operating supply
• 25 mA drive capability at TTL levels
• Ideal for HDTV applications and oscillator
manufacturers
MicroClock offers a wide variety of clock
• Advanced, low power CMOS process
• Custom masks easily and quickly made
synthesizers for desktop and portable computers,
and multimedia systems. Consult MicroClock to
eliminate crystals and oscillators from your board.
Block Diagram
VDD GND
2
Clock Synthesis
and Control
Circuitry
SEL
X1
Output
Buffer
CLK
27 MHz
crystal or
clock
74.17582418 MHz or
74.2500 MHz
Clock
Buffer
Output
Buffer
27.0000 MHz
X2
MDS 2716 B
1
Revision 062599
Printed 11/16/00
MicroClock Division of ICS • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel•(408)295-9818fax
MK2716
HDTV Clock Synthesizer
ICR O CLOC K
Pin Assignment
Frequency Select Table (MHz)
1
2
3
4
8
7
6
5
ICLK/X1
VDD
X2
SEL
CLK
27M
SEL
0
1
74.17582418
74.25
GND
CLK
GND
8 pin SOIC
Pin Descriptions
Number
Name
ICLK/X1
VDD
GND
CLK
Type Description
XI Input clock connection. Connect to a 27 MHz clock input or 27 MHz fundamental crystal.
1
2
3
4
5
6
7
8
P
P
O
P
I
Connect to +3.3V or +5V.
Connect to ground.
74.17582418 MHz or 74.25 MHz clock output (see table above).
Connect to ground.
GND
SEL
Select pin determines value of CLK per table above.
27 MHz buffered clock or crystal oscillator output.
27M
O
X2
XO Connect to 27 MHz crystal, or leave unconnected for clock input.
Type: I = Input; O = output; P = power supply connection; XI, XO = crystal connections
Decoupling and External Components
The MK2716 requires a 0.1µF decoupling capacitor to be connected between VDD and GND on pins 2
and 3. It must be connected close to the MK2716. Pin 5 can be connected to pin 3. A 33 Wterminating
resistor should be placed close to pin 4, and pin 7. If using a crystal input, it should be a 27.00 MHz,
parallel resonant, fundamental mode, with load (correlation) capacitance of 18 pF. If the crystal has a load
capacitance of 20 pF, connect 4 pF capacitors from X1 and X2 to ground.
MDS 2716 B
2
Revision 062599
Printed 11/16/00
MicroClock Division of ICS • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel•(408)295-9818fax
MK2716
HDTV Clock Synthesizer
ICR O CLOC K
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum Units
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply voltage, VDD
Referenced to GND
7
VDD+0.5
70
V
V
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage temperature
Referenced to GND
Max of 10 seconds
-0.5
0
°C
°C
°C
260
-65
150
DC CHARACTERISTICS (VDD = 5V unless noted)
Operating Voltage, VDD
3.0
2
5
5.5
0.8
0.4
V
V
Input High Voltage, VIH
Input Low Voltage, VIL
V
Output High Voltage, VOH
Output Low Voltage, VOL
Operating Supply Current, IDD, 5.0V
Short Circuit Current
IOH=-4mA
IOL=25mA
No Load
VDD-0.4
V
V
30
±50
7
mA
mA
pF
Each output
Input Capacitance
AC CHARACTERISTICS (VDD = 5V unless noted)
Input Frequency
27.000
MH z
ppm
ns
Frequency Error, output clock
0
Output Clock Rise Time
0.8 to 2.0V
2.0 to 0.8V
At 1.4V
1.5
1.5
60
Output Clock Fall Time
ns
Output Clock Duty Cycle
Maximum Absolute Jitter, short term
40
50
%
200
ps
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.
2. Typical values are at 25°C.
MDS 2716 B
3
Revision 062599
Printed 11/16/00
MicroClock Division of ICS • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel•(408)295-9818fax
MK2716
HDTV Clock Synthesizer
ICR O CLOC K
Package Outline and Package Dimensions
8 pin SOIC
Inches
Millimeters
Min Max
0.055 0.068 1.397 1.7272
Symbol Min
Max
A
b
E
H
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
Pin 1
D
E
H
e
.050 BSC
0.015
0.016 0.035 0.406
0.004 0.01 0.102
1.27 BSC
h
0.381
0.889
0.254
h x 45°
D
L
Q
A
Q
c
b
e
Ordering Information
Part/Order Number
MK2716S
Marking
MK2716S
MK2716S
Package
8 pin narrow SOIC
8 pin SOIC on tape and reel
Temperature
0-70°C
Std Qty
-
2500 pieces
MK2716STR
0-70°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.
MDS 2716 B
4
Revision 062599
Printed 11/16/00
MicroClock Division of ICS • 525 Race Street • San Jose • CA • 95126•(408)295-9800tel•(408)295-9818fax
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