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8N4D270AG-0000CDI8 PDF预览

8N4D270AG-0000CDI8

更新时间: 2024-12-02 01:00:59
品牌 Logo 应用领域
艾迪悌 - IDT 石英晶振
页数 文件大小 规格书
21页 216K
描述
Quad-Frequency Programmable XO

8N4D270AG-0000CDI8 数据手册

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Quad-Frequency Programmable XO IDT8N3Q001 REV G  
DATA SHEET  
General Description  
Features  
The IDT8N3Q001 is a Quad-Frequency Programmable Clock  
Oscillator with very flexible frequency programming capabilities. The  
device uses IDT’s fourth generation FemtoClock® NG technology for  
an optimum of high clock frequency and low phase noise  
performance. The device accepts 2.5V or 3.3V supply and is  
packaged in a small, lead-free (RoHS 6) 10-lead Ceramic 5mm x  
7mm x 1.55mm package.  
Fourth generation FemtoClock® NG technology  
Programmable clock output frequency from 15.476MHz to  
866.67MHz and from 975MHz to 1,300MHz  
Four power-up default frequencies (see part number order  
codes), re-programmable by I2C  
I2C programming interface for the output clock frequency and  
internal PLL control registers  
Besides the four default power-up frequencies set by the FSEL0 and  
FSEL1 pins, the IDT8N3Q001 can be programmed via the I2C  
interface to output clock frequencies between 15.476MHz to  
866.67MHz and from 975MHz to 1,300MHz to a very high degree of  
precision with a frequency step size of 435.9Hz ÷ N (N is the PLL  
output divider). Since the FSEL0 and FSEL1 pins are mapped to 4  
independent PLL M and N divider registers (P, MINT, MFRAC and N),  
reprogramming those registers to other frequencies under control of  
FSEL0 and FSEL1 is supported. The extended temperature range  
supports wireless infrastructure, telecommunication and networking  
end equipment requirements.  
Frequency programming resolution is 435.9Hz ÷N  
One 2.5V, 3.3V LVPECL clock output  
Two control inputs for the power-up default frequency  
LVCMOS/LVTTL compatible control inputs  
RMS phase jitter @ 156.25MHz (12kHz - 20MHz): 0.244ps  
(typical), integer PLL feedback configuration  
RMS phase jitter @ 156.25MHz (1kHz - 40MHz): 0.265ps  
(typical), integer PLL feedback configuration  
Full 2.5V or 3.3V supply modes  
-40°C to 85°C ambient operating temperature  
Available in Lead-free (RoHS 6) package  
Block Diagram  
Pin Assignment  
PFD  
&
LPF  
FemtoClock® NG  
VCO  
1950-2600MHz  
Q  
nQ  
÷P  
OSC  
÷N  
DNU 1  
OE 2  
8 V  
CC  
fXTAL  
7 nQ  
6 Q  
V
3
÷MINT, MFRAC  
EE  
2
7
25  
Pulldown  
Pulldown  
FSEL1  
FSEL0  
Configuration Register (ROM)  
IDT8N3Q001  
10-lead Ceramic 5mm x 7mm x 1.55mm  
package body  
(Frequency, APR, Polarity)  
Pullup  
Pullup  
SCLK  
SDATA  
I2C Control  
CD Package  
Top View  
Pullup  
OE  
IDT8N3Q001GCD REVISION A MARCH 6, 2012  
1
©2012 Integrated Device Technology, Inc.  

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