MK2731-04S [ICSI]
MPEG Audio Clock; MPEG音频时钟
| 型号： | MK2731-04S |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | MPEG Audio Clock |
| 文件： | 总4页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY INFORMATION
MK2731-04C
MPEG Audio Clock
Features
Description
The MK2731-04 is a low cost, low jitter, high
performance clock synthesizer designed to replace
expensive discrete clock oscillators in MPEG audio
applications. Using ICS/MicroClock’s patented
analog/digital Phase-Locked Loop (PLL)
techniques, the device uses an inexpensive
14.4 MHz crystal input to produce all of the
popular audio sampling frequencies.
• Packaged in 16 pin narrow SOIC
• Replaces multiple oscillators
• 3.3V or 5V operation
• Uses an inexpensive 14.4 MHz crystal
• Supports 32 kHz, 44.1 kHz, 48 kHz, and 96 kHz
audio sampling rates
• Has 256x, 384x, and 512x sampling rates -
compatible with every popular audio DAC
• Zero ppm synthesis error
ICS manufactures the largest variety of Set-Top
Box and multimedia clock synthesizers for all
applications. Consult ICS to eliminate VCXOs,
crystals and oscillators from your board.
• 25 mA output drive capability at TTL levels
• Advanced, low power, sub-micron CMOS process
Block Diagram
VDD
3
GND
3
3
S2:S0
Output
CLK2
Buffer
PLL/Clock
Synthesis
Circuitry
X1
14.40 MHz
Crystal
Oscillator
Output
Buffer
crystal
÷ 2
CLK1
X2
MDS 2731-04 CA
1
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel • www.icst.com
PRELIMINARY INFORMATION
MK2731-04C
MPEG Audio Clock
Pin Assignment
Output Clocks Select Table (MHz)
S2
S1
S0
CLK1
Pin 9
CLK2
Pin 11
MK2731-04
Pin 8
Pin 13 Pin 14
16
1
2
3
4
5
6
7
8
DC
X2
X1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
16.9344 33.8688
11.2896 22.5792
8.192 16.384
18.432 36.864
11.2896 22.5792
12.288 24.576
15 DC
S0
14
13
12
11
VDD
VDD
S1
DC
CLK2
GND
GND
GND
S2
Test
Test
Test
Test
10 VDD
CLK1
9
Key: 0 = connect directly to GND
1 = connect directly to VDD
16 pin narrow (150 mil) SOIC
Pin Descriptions
Number
Name
X2
Type Description
1
XO
XI
P
Crystal connection. Connect to a parallel mode 14.4 MHz crystal.
Crystal connection. Connect to a parallel mode 14.4 MHz crystal.
Connect to +3.3V or +5V. Must be same at all VDDs.
Connect to ground.
2
3, 4, 10
5, 6, 7
8
X1
VDD
GND
S2
P
I
Frequency select pin 2. Determines clock outputs per table above.
Clock output 1 set by status of S0-S2. See table above. This output is CLK2/2
Clock output 2 set by status of S0-S2. See table above.
9
CLK1
CLK2
DC
O
O
-
11
12, 15, 16
13
Don't Connect. Do not connect anything to these pins.
Frequency select pin 1. Determines clock outputs per table above.
Frequency select pin 0. Determines clock outputs per table above.
S1
I
14
S0
I
Key: I = Input with internal pull-up resistor; O = output; P = power supply connection; XI, XO = crystal
connections
External Components
The MK2731-04 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.01µF should be connected between VDD and GND on pins 3 and 5, and VDD and GND
on pins 10 and 6, as close to the MK2731-04 as possible. Other VDDs can be connected to pin 10. A series
termination resistor of 33 Wmay be used for each clock output. Any unused clock outputs should be left
unconnected (DC, floating). The input crystal must be connected as close to the chip as possible. The input
crystal should be fundamental mode, parallel resonant. For accurate outputs, the crystal should be tuned
with two identical capacitors to ground, as shown on the block diagram. The value of these two crystal caps
should be equal to (C -6)*2, where C is the crystal load (or correlation) capacitance.
L
L
MDS 2731-04 CA
2
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel • www.icst.com
PRELIMINARY INFORMATION
MK2731-04C
MPEG Audio Clock
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 = 3.3V unless noted)
Operating Voltage, VDD
3.00
5.0
5.50
(VDD/2)-1
0.8
V
V
Input High Voltage, VIH, X1 pin only
Input Low Voltage, VIL, X1 pin only
Input High Voltage, VIH
(VDD/2)+1
VDD/2
VDD/2
V
2
V
Input Low Voltage, VIL
V
Output High Voltage, VOH
Output Low Voltage, VOL
Output High Voltage, VOH, CMOS level
Operating Supply Current, IDD
Short Circuit Current
IOH=-12mA
IOL=12mA
IOH=-4mA
No Load
2.4
V
0.4
V
VDD-0.4
V
10
±50
7
mA
mA
pF
ppm
Each output
S0, S1, S2
Input Capacitance
Frequency synthesis error
Both clocks
0
AC CHARACTERISTICS (VDD = 3.3V unless noted)
Input Crystal Frequency
14.40
MH z
ns
Output Clock Rise Time
0.8 to 2.0V
1.5
1.5
60
Output Clock Fall Time
2.0 to 0.8V
ns
Output Clock Duty Cycle
Maximum Absolute Jitter, short term
At VDD/2
40
%
11.288MHz, VDD=5V
11.288MHz, VDD=3.3V
±65
±85
ps
ps
Note: 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.
MDS 2731-04 CA
3
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel • www.icst.com
PRELIMINARY INFORMATION
MK2731-04C
MPEG Audio Clock
Package Outline and Package Dimensions
(For current dimensional specifications, see JEDEC Publication No. 95.)
16 pin narrow SOIC
SOIC
Symbol Min
Max
1.75
0.25
0.51
0.25
10.00
4.00
6.20
E
H
A
A1
B
C
D
E
1.35
0.10
0.33
0.19
9.80
3.80
5.80
H
e
D
1.27 BSC
h
0.25
0.40
0.50
1.27
L
A
C
A1
All dimensions in mm.
B
e
L
Ordering Information
Part/Order Number
MK2731-04S
Marking
Shipping packaging
tubes
Package
Temperature
MK2731-04S
MK2731-04S
16 pin SOIC
16 pin SOIC
0-70 °C
0-70 °C
MK2731-04STR
tape and reel
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 2731-04 CA
4
Revision 122799
Printed 11/16/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel • www.icst.com
相关型号：
©2020 ICPDF网 联系我们和版权申明