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CGS410V

更新时间： 2024-11-13 21:15:39
品牌 Logo 应用领域
德州仪器 - TI 时钟外围集成电路晶体
页数 文件大小 规格书
18页 285K
描述
135MHz, VIDEO CLOCK GENERATOR, PQCC28, PLASTIC, LCC-28

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中文翻译

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CGS410V 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：QCCJ, LDCC28,.5SQReach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.91其他特性：DIFFERENTIAL O/P'S
JESD-30 代码：S-PQCC-J28JESD-609代码：e0
长度：11.43 mm端子数量：28
最高工作温度：70 °C最低工作温度：
最大输出时钟频率：135 MHz封装主体材料：PLASTIC/EPOXY
封装代码：QCCJ封装等效代码：LDCC28,.5SQ
封装形状：SQUARE封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5 V
主时钟/晶体标称频率：35 MHz认证状态：Not Qualified
座面最大高度：4.57 mm子类别：Clock Generators
最大供电电压：5.25 V最小供电电压：4.75 V
标称供电电压：5 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：J BEND
端子节距：1.27 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：11.43 mm
uPs/uCs/外围集成电路类型：CLOCK GENERATOR, VIDEOBase Number Matches：1

CGS410V 数据手册

 浏览型号CGS410V的Datasheet PDF文件第2页浏览型号CGS410V的Datasheet PDF文件第3页浏览型号CGS410V的Datasheet PDF文件第4页浏览型号CGS410V的Datasheet PDF文件第5页浏览型号CGS410V的Datasheet PDF文件第6页浏览型号CGS410V的Datasheet PDF文件第7页 
September 1995  
CGS410  
Programmable Clock Generator  
General Description  
The CGS410 is a programmable clock generator which pro-  
duces a variable frequency clock output for use in graphics,  
disk drives and clock synchronizing applications. The  
CGS410 produces output clocks in CMOS and differential  
formats. The user is able to program the differential output  
levels to best suit the levels of the interfacing device. A  
common configuration allows PCLK to emulate positive ECL  
logic levels, eliminating the need for TTL to ECL translation.  
An additional advantage of the CGS410 is its ability to per-  
form smooth, glitch-free clock output changes as the user  
selects passthru clock sources or changes the VCO  
frequency.  
A real-time synchronous load clock enable  
(LCLK EN) control input allows for the enabling and dis-  
Ð
abling of the LCLK output. This is suitable for applications  
which require the removal of an active LCLK during the  
blanking portion of a screen refresh.  
The CGS410 is referenced off the XTLIN input which can be  
configured for either external crystal or external oscillator  
support. All internal frequency generation is referenced from  
the XTLIN input. The CGS410 can also be driven by  
EXTCLK as desired. EXTCLK may serve as the source from  
a fixed clock (for passthru mode), or as an external VCO  
input.  
On power-up the XTLIN frequency is internally divided by  
two and routed to the PCLK outputs, providing a known  
power-up output frequency with a 50% duty cycle. The  
CGS410 is programmed by a serial stream of data. A serial  
bit read can verify the contents of the register.  
Features  
Y
The CGS410 contains three internal user-selectable low  
pass filters (LPFs). A fourth option allows for the use of an  
external LPF configuration. Use of the internal filters greatly  
simplifies layout, reduces board real estate, and minimizes  
part count. A programmable polarity charge pump allows  
the user to optimize the optional external LPF circuitry.  
Fully programmable frequency generator  
Y
Provides frequencies to 135 MHz  
Y
Configurable high-speed complementary clock outputs  
Y
CMOS output clocks  
Y
Glitch-free transitions for clock changes  
Y
Powers up in a known state  
a
The primary loop structure of the CGS410 consists of pro-  
grammable N and R dividers. Both are contiguous; N can be  
any value between 2 and 16383, and R can be any value  
between 1 and 1023. Additional dividers of the internal  
VCO allow individual programmability for the PCLK,  
Y
Single supply ( 5V) operation  
Y
Y
Y
Low current draw, ideal for battery applications  
Read/write control register  
Internal VCO and loop filters  
CMOS PCLK, and LCLK outputs.  
Ð
Connection Diagram  
TL/F/11919–1  
Important Note: This device is sensitive to noise on certain pins, especially FREQCTL, FILTER, AVDD, and AGND. Special care must be taken with board  
layout for optimum performance.  
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/F/11919  
RRD-B30M115/Printed in U. S. A.  
1234567...18

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