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843004AGI-01LF PDF预览

843004AGI-01LF

更新时间: 2024-11-03 01:11:55
品牌 Logo 应用领域
艾迪悌 - IDT /
页数 文件大小 规格书
19页 406K
描述
FemtoClock Crystal-to-3.3V, 2.5V LVPECL Frequency Synthesizer

843004AGI-01LF 数据手册

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®
FemtoClock Crystal-to-3.3V, 2.5V  
843004I-01  
LVPECL Frequency Synthesizer  
General Description  
Features  
The 843004I-01 is a 4 output LVPECL synthesizer optimized to  
generate Ethernet reference clock frequencies. Using a 25MHz  
18pF parallel resonant crystal, the following frequencies can be  
generated based on the settings of 2 frequency select pins  
(F_SEL[1:0]): 156.25MHz, 125MHz, 62.5MHz. The 843004I-01 uses  
IDT’s 3rd generation low phase noise VCO technology and can  
achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet  
jitter requirements. The 843004I-01 is packaged in a small 24-pin  
TSSOP package.  
Four 3.3V differential LVPECL output pairs  
Selectable crystal oscillator interface  
or LVCMOS/LVTTL single-ended clock input  
Supports the following output frequencies: 156.25MHz, 125MHz,  
62.5MHz  
VCO range: 560MHz – 680MHz  
RMS phase jitter @ 156.25MHz, using a 25MHz crystal  
(1.875MHz – 20MHz): 0.54ps (typical)  
Full 3.3V or 2.5V supply modes  
-40°C to 85°C ambient operating temperature  
Lead-free (RoHS 6) package  
Frequency Select Function Table  
Inputs  
Output Frequency (MHz)  
F_SEL1  
F_SEL0  
M Div. Value  
N Div. Value  
M/N Div. Value  
(25MHz Reference)  
0
0
1
1
0
1
0
1
25  
25  
25  
25  
4
5
6.25  
5
156.25  
125  
10  
2.5  
62.5  
Not Used  
Not Used  
Block Diagram  
Pin Assignment  
Pulldown  
2
nQ2  
Q2  
F_SEL[1:0]  
nQ1  
Q1  
1
2
24  
23  
Pulldown  
nPLL_SEL  
VCCO  
Q3  
VCCO  
Q0  
3
4
22  
21  
Q0  
F_SEL[1:0]  
5
6
7
20  
19  
18  
17  
nQ3  
VEE  
VCC  
nQ0  
MR  
nPLL_SEL  
Pulldown  
nQ0  
Q1  
0 0 ÷4  
TEST_CLK  
1
0
1
0
0 1 ÷5  
1 0 ÷10  
1 1 not used  
VCO  
625MHz  
(w/25MHz  
Reference)  
nc  
8
9
10  
11  
12  
nXTAL_SEL  
XTAL_IN  
OSC  
nQ1  
Phase  
Detector  
VCCA  
F_SEL0  
VCC  
16  
15  
14  
13  
TEST_CLK  
VEE  
XTAL_IN  
XTAL_OUT  
XTAL_OUT  
F_SEL1  
Q2  
Pulldown  
nXTAL_SEL  
843004I-01  
24-Lead TSSOP  
nQ2  
Q3  
M = 25 (fixed)  
4.4mm x 7.8mm x 0.925mm  
package body  
G Package  
nQ3  
Pulldown  
MR  
Top View  
©2016 Integrated Device Technology, Inc  
1
January 18, 2016  

843004AGI-01LF 替代型号

型号 品牌 替代类型 描述 数据表
843004AGI-01LFT IDT

完全替代

FemtoClock Crystal-to-3.3V, 2.5V LVPECL Frequency Synthesizer

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