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ICS844031AGI-01T PDF预览

ICS844031AGI-01T

更新时间: 2024-11-05 11:14:43
品牌 Logo 应用领域
矽成 - ICSI 时钟发生器
页数 文件大小 规格书
12页 226K
描述
FEMTOCLOCKS? CRYSTAL-TO- LVDS CLOCK GENERATOR

ICS844031AGI-01T 数据手册

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PRELIMINARY  
ICS844031I-01  
Integrated  
Circuit  
Systems, Inc.  
FEMTOCLOCKS™ C RYSTAL-TO- LVDS  
CLOCK GENERATOR  
GENERAL DESCRIPTION  
FEATURES  
(1) Differential LVDS output  
The ICS844031I-01 is an Ethernet Clock  
ICS  
Generator and a member of the HiPerClocksTM  
family of high performance devices from ICS.The  
ICS844031I-01 uses an 18pF parallel resonant  
crystal over the range of 19.6MHz - 27.2MHz. For  
HiPerClockS™  
Crystal oscillator interface, 18pF parallel resonant crystal  
(19.6MHz - 27.2MHz)  
Output frequency range: 245MHz - 340MHz  
VCO range: 490MHz - 680MHz  
Ethernet applications, a 25MHz crystal is used to generate  
312.5MHz.The ICS844031I-01 has excellent <1ps phase jitter  
performance, over the 1.875MHz - 20MHz integration range.  
The ICS844031I-01 is packaged in a small 8-pin TSSOP,  
making it ideal for use in systems with limited board space.  
RMS phase jitter @ 312.5MHz, using a 25MHz crystal  
(1.875MHz - 20MHz): 0.49ps (typical)  
3.3V or 2.5V operating supply  
-40°C to 85°C ambient operating temperature  
COMMON CONFIGURATION TABLE  
Inputs  
Output Frequency  
(MHz)  
Multiplication  
Value M/N  
Crystal Frequency (MHz)  
M
N
25  
25  
2
12.5  
312.5  
BLOCK DIAGRAM  
PIN ASSIGNMENT  
Pullup  
OE  
VDDA  
GND  
VDD  
Q
1
2
3
4
8
7
6
5
XTAL_OUT  
XTAL_IN  
nQ  
OE  
XTAL_IN  
OSC  
XTAL_OUT  
Q
VCO  
Phase  
Detector  
N = ÷2 (fixed)  
490MHz - 680MHz  
nQ  
ICS844031I-01  
8-Lead TSSOP  
4.40mm x 3.0mm x 0.925mm  
package body  
M = ÷25 (fixed)  
G Package  
Top View  
The Preliminary Information presented herein represents a product in prototyping or pre-production.The noted characteristics are based on initial  
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.  
844031AGI-01  
www.icst.com/products/hiperclocks.html  
REV. B JULY 6, 2005  
1

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