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参数资料
| 型号： | MK2772-01STR |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 27 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封装： | SOIC-20 |
| 文件页数： | 1/4页 |
| 文件大小： | 483K |
| 代理商： | MK2772-01STR |
MK2772-01
VCXO and Set-Top Clock Source
MDS 2772-01 D
1
Revision 102704
Integrated Circuit Systems, Inc. 525 Race Street San Jose CA 95126 (408)295-9800tel www.icst.com
Block Diagram
Description
Features
The MK2772-01 is a low cost, low jitter, high
performance VCXO and clock synthesizer for set-top
boxes. The on-chip Voltage Controlled Crystal
Oscillator accepts a 0 to 3V input voltage to cause the
output clocks to vary by ±100 ppm. Using ICS’
patented VCXO and analog Phase-Locked Loop (PLL)
techniques, the device uses an inexpensive 13.5 MHz
crystal input to produce multiple output clocks. All
clocks are frequency locked to the 27.00MHz output
(and to each other) with zero ppm error. The MK2772
includes a glitch-free multiplexer to switch input
sources during operation.
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.
Packaged in 20 pin SOIC (Pb free available)
Uses an inexpensive 13.5 MHz crystal
On-chip VCXO (patented) with pull range
of 200ppm (minimum)
Ability to switch input sources “on-the-fly”
VCXO tuning voltage of 0 to 3V
Zero ppm synthesis error (patented) in all
clocks. All exactly track 27MHz VCXO
All clocks are frequency locked. All will vary the
same amount (in ppm) as the VCXO
Selectable Audio clock for 256x, 384x, and 512x.
25mA output drive capability at TTL levels
Advanced, low power, sub-micron CMOS process
5V operating voltage
Voltage Controlled
Crystal Oscillator
and x2 PLL
VDD
GND
Clock
Synthesis
Circuitry
Output
Buffer
Output
Buffer
3.6864 MHz
Output
Buffers
11.0592 MHz
Audio Clock
Output
Buffer
27.000 MHz
3
2
ACS1:0
13.5 MHz
pullable
crystal
X1
X2
VIN
Output
Buffer
16.6667 MHz
INMUXSEL
EXTCLKIN
3
deglitched
mux
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