參數(shù)資料
型號: 487G-25
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時鐘產(chǎn)生/分配
英文描述: 48 MHz, VIDEO CLOCK GENERATOR, PDSO16
封裝: 0.173 INCH, TSSOP-16
文件頁數(shù): 1/7頁
文件大?。?/td> 188K
代理商: 487G-25
DATASHEET
QUAD PLL FOR DTV
ICS487-25
IDT / ICS QUAD PLL FOR DTV
1
ICS487-25
REV B 092109
Description
The ICS487-25 generates five high-quality,
high-frequency clock outputs. It is designed to replace
crystals and crystal oscillators in DTV applications.
Using IDT’s patented Phase Locked Loop (PLL)
techniques, the device runs from a lower frequency
crystal or clock input.
Because there is zero ppm frequency synthesis error on
the audio clocks, the audio will remain locked to the
video.
Features
Packaged in 16-pin TSSOP
Available in Pb-free packaging
Replaces multiple crystals and oscillators
Input crystal or clock frequency of 27 MHz
Zero ppm frequency synthesis error
Duty cycle of 45/55
Operating voltage of 3.3 V
Advanced, low power CMOS process
NOTE: EOL for non-green parts to occur on
5/13/10 per PDN U-09-01
Block Diagram
X1/ICLK
X2
PLL1
PLL2
Crystal
Oscillator/
Clock
Buffer
27 MHz
clock or
crystal
input
External capacitors
may be required.
VDD
GND
PDTS (all outputs and PLLs)
20M
ACLK
3
PLL3
33.0M
PLL4
24.576M
S1:0
2
48M
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