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AD9856/PCB Fiches technique(PDF) 35 Page - Analog Devices

No de pièce AD9856/PCB
Description  CMOS 200 MHz Quadrature Digital Upconverter
PDF  37 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD9856/PCB Fiches technique(HTML) 35 Page - Analog Devices

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AD9856
Rev. C | Page 34 of 36
Figure 52. PCB Lay Out Pattern for Four-Layer AD9856 PCB Evaluation Board
Layer 1 (Top)—Signal Routing and Ground Plane
Figure 53. PCB Lay Out Pattern for Four-Layer AD9856 PCB Evaluation Board
Layer 2—Ground Plane
Figure 54. PCB Lay Out Pattern for Four-Layer AD9856 PCB Evaluation Board
Layer 3—DUT +V, +5 V and 12 V Power Plane
BOT
TO
M
SI
DE
MA
DE
IN
U.
S.
A.
AD
98
56
RE
V.
C
Figure 55. PCB Lay Out Pattern for Four-Layer AD9856 PCB Evaluation Board
Layer 4 (Bottom)—Signal Routing
AD8320/21
PROGRAMMABLE
CABLE DRIVER
AMPLIFIER
ENABLE AND GAIN CONTROL BUS
75
Ω
LP FILTER
AD9856
QUADRATURE DIGITAL
UPCONVERTER
CIU CONTROL PROCESSOR
DIRECT
CONTROL
LINES
CONTROL
BUS
75
Ω
TO
75
Ω
CABLE
PLANT
UPSTREAM
TO
DOWNSTREAM
DEMODULATOR
75
Ω
DATA IN
8-20MHz
REF CLOCK IN
Figure 56. Basic Implementation of AD9856 Digital Modulator and AD8320/AD8321 Programmable Cable Driver Amplifier
in 5 MHz to 65 MHz HFC Return-Path Application
VDD
DIGITAL
OUT
IOUT IOUTB
VDD
VDD
DIGITAL
IN
Figure 57. Equivalent I/O Circuits



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