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8N4S270AC-1080CDI PDF预览

8N4S270AC-1080CDI

更新时间: 2024-01-23 22:36:30
品牌 Logo 应用领域
艾迪悌 - IDT 机械输出元件振荡器
页数 文件大小 规格书
18页 606K
描述
LVDS Output Clock Oscillator

8N4S270AC-1080CDI 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:ActiveReach Compliance Code:compliant
风险等级:5.71其他特性:ENABLE/DISABLE FUNCTION; DIFFERENTIAL OUTPUT; TRAY
最长下降时间:0.45 ns频率调整-机械:NO
频率稳定性:100%JESD-609代码:e3
安装特点:SURFACE MOUNT标称工作频率:125 MHz
最高工作温度:85 °C最低工作温度:-40 °C
振荡器类型:LVDS物理尺寸:7.0mm x 5.0mm x 1.55mm
最长上升时间:0.45 ns最大供电电压:3.465 V
最小供电电压:3.135 V标称供电电压:3.3 V
表面贴装:YES最大对称度:53/47 %
端子面层:Matte Tin (Sn)Base Number Matches:1

8N4S270AC-1080CDI 数据手册

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IDT8N4S270 Data Sheet  
LVDS FREQUENCY-PROGRAMMABLE CRYSTAL OSCILLATOR  
Schematic Layout  
Figure 2 shows an example IDT8N4S270 application schematic. The  
schematic example focuses on functional connections and is  
intended as an example only and may not represent the exact user  
configuration. Refer to the pin description and functional tables in the  
datasheet to ensure the logic control inputs are properly set. For  
example OE and FSEL can be configured from an FPGA instead of  
set with pull up and pull down resistors as shown.  
capacitor on the VDD pin must be placed on the device side with  
direct return to the ground plane though vias. The remaining filter  
components can be on the opposite side of the PCB.  
Power supply filter component recommendations are a general  
guideline to be used for reducing external noise from coupling into  
the devices. The filter performance is designed for a wide range of  
noise frequencies. This low-pass filter starts to attenuate noise at  
approximately 10kHz. If a specific frequency noise component is  
known, such as switching power supplies frequencies, it is  
recommended that component values be adjusted and if required,  
additional filtering be added. Additionally, good general design  
practices for power plane voltage stability suggests adding bulk  
capacitance in the local area of all devices.  
As with any high speed analog circuitry, the power supply pins are  
vulnerable to random noise, so to achieve optimum jitter performance  
isolation of the VDD pin from power supply is required. In order to  
achieve the best possible filtering, it is recommended that the  
placement of the filter components be on the device side of the PCB  
as close to the power pins as possible. If space is limited, the 0.1µF  
Logic Control Input Examples  
Set Logic  
Input to '1'  
Set Logic  
Input to '0'  
VDD  
VDD  
RU1  
1K  
RU2  
Not Install  
To Logic  
Input  
pins  
To Logic  
Input  
pins  
RD1  
Not Install  
RD2  
1K  
3.3V  
FB1  
2
1
VD D  
C4  
10uF  
BLM18BB221SN1  
C5  
0.1uF  
Place 0.1uF bypass cap  
directly adjacent to  
the VDD pin.  
U1  
1
2
3
6
4
5
OE  
C3  
0.1uF  
OE  
VDD  
DNU  
GND  
Q
Zo = 50 Ohm  
Zo = 50 Ohm  
nQ  
+
-
R1  
100  
LVDS Receiver  
Figure 2. IDT8N4S270 Schematic Example  
IDT8N4S270CCD REVISION A AUGUST 31, 2012  
12  
©2012 Integrated Device Technology, Inc.  

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