參數(shù)資料
型號: ADCLK944BCPZ-WP
廠商: Analog Devices Inc
文件頁數(shù): 1/12頁
文件大?。?/td> 0K
描述: IC CLOCK BUFFER 1:4 7GHZ 16LFCSP
標準包裝: 50
系列: SIGe
類型: 扇出緩沖器(分配)
電路數(shù): 1
比率 - 輸入:輸出: 1:4
差分 - 輸入:輸出: 是/是
輸入: CML,CMOS,LVDS,LVPECL
輸出: ECL,LVPECL
頻率 - 最大: 7GHz
電源電壓: 2.375 V ~ 3.63 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-WFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 16-LFCSP-WQ(3x3)
包裝: 托盤 - 晶粒
2.5 V/3.3 V, Four LVPECL Outputs,
SiGe Clock Fanout Buffer
ADCLK944
Rev. 0
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responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
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Fax: 781.461.3113
2010 Analog Devices, Inc. All rights reserved.
FEATURES
Operating frequency: 7.0 GHz
Broadband random jitter: 50 fs rms
On-chip input terminations
Power supply (VCC VEE): 2.5 V to 3.3 V
APPLICATIONS
Low jitter clock distribution
Clock and data signal restoration
Level translation
Wireless communications
Wired communications
Medical and industrial imaging
ATE and high performance instrumentation
FUNCTIONAL BLOCK DIAGRAM
LVPECL
ADCLK944
REFERENCE
REF
VT
Q0
Q1
Q2
V
CLK
Q2
Q3
CLK
0
87
70
-00
1
Figure 1.
GENERAL DESCRIPTION
The ADCLK944 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 can
accept 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 ADCLK944 features four 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 ADCLK944 is available in a 16-lead LFCSP and is specified
for operation over the standard industrial temperature range of
40°C to +85°C.
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