參數(shù)資料
型號(hào): 023AI
英文描述: FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
中文描述: FEMTOCLOCKS -商標(biāo)晶體到3.3伏,2.5伏的LVPECL時(shí)鐘發(fā)生器
文件頁數(shù): 1/13頁
文件大?。?/td> 195K
代理商: 023AI
843023AGI
www.icst.com/products/hiperclocks.html
REV. A JUNE 29, 2005
1
Integrated
Circuit
Systems, Inc.
ICS843023I
FEMTOCLOCKSCRYSTAL-TO-3.3V, 2.5V
LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS843023I is a Gigabit Ethernet Clock
Generator and a member of the HiPerClocksTM
family of high performance devices from ICS.
The ICS843023I uses a 25MHz crystal to
synthesize 250MHz. The ICS843023I has
excellent phase jitter performance, over the 1.875MHz – 20MHz
integration range. The ICS843023I is packaged in a small
8-pin TSSOP, making it ideal for use in systems with
limited board space.
FEATURES
1 differential 3.3V LVPECL output
Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
Output frequency range: 245MHz - 320MHz
VCO range: 490MHz - 640MHz
RMS phase jitter @ 250MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.39ps (typical)
Phase noise:
Offset
Noise Power
100Hz ............... -86.3 dBc/Hz
1kHz .............. -114.6 dBc/Hz
10kHz .............. -125.6 dBc/Hz
100kHz ................ -126 dBc/Hz
3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
Lead-Free package fully RoHS compliant
HiPerClockS
ICS
ICS843023I
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
VCC
XTAL_OUT
XTAL_IN
VEE
1
2
3
4
Q
nQ
VCC
OE
8
7
6
5
BLOCK DIAGRAM
PIN ASSIGNMENT
OSC
Phase
Detector
VCO
÷2
(fixed)
÷20
(fixed)
XTAL_IN
XTAL_OUT
Q
nQ
25MHz
OE
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