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ADCLK946 PDF预览

ADCLK946

更新时间: 2024-11-24 06:36:19
品牌 Logo 应用领域
亚德诺 - ADI 时钟
页数 文件大小 规格书
12页 354K
描述
Six LVPECL Outputs, SiGe Clock Fanout Buffer

ADCLK946 数据手册

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Six LVPECL Outputs,  
SiGe Clock Fanout Buffer  
ADCLK946  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
4.8 GHz operating frequency  
75 fs rms broadband random jitter  
On-chip input terminations  
3.3 V power supply  
LVPECL  
ADCLK946  
Q0  
Q0  
V
REFERENCE  
REF  
Q1  
Q1  
Q2  
Q2  
Q3  
Q3  
Q4  
Q4  
Q5  
Q5  
V
T
APPLICATIONS  
CLK  
CLK  
Low jitter clock distribution  
Clock and data signal restoration  
Level translation  
Wireless communications  
Wired communications  
Medical and industrial imaging  
ATE and high performance instrumentation  
GENERAL DESCRIPTION  
Figure 1.  
The ADCLK946 is an ultrafast clock fanout buffer fabricated on  
the Analog Devices, Inc., proprietary XFCB3 silicon germanium  
(SiGe) bipolar process. This device is designed for high speed  
applications requiring low jitter.  
The device has a differential input equipped with center-tapped,  
differential, 100 Ω on-chip termination resistors. The input accepts  
dc-coupled LVPECL, CML, 3.3 V CMOS (single ended), and  
ac-coupled 1.8 V CMOS, LVDS, and LVPECL inputs. A VREF pin  
is available for biasing ac-coupled inputs.  
The ADCLK946 features six full-swing emitter-coupled logic  
(ECL) output drivers. For LVPECL (positive ECL) operation,  
bias VCC to the positive supply and VEE to ground. For ECL  
operation, bias VCC to ground and VEE to the negative supply.  
The ECL output stages are designed to directly drive 800 mV  
each side into 50 Ω terminated to VCC − 2 V for a total differen-  
tial output swing of 1.6 V.  
The ADCLK946 is available in a 24-lead LFCSP and is specified  
for operation over the standard industrial temperature range of  
−40°C to +85°C.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2009 Analog Devices, Inc. All rights reserved.  
 
 

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