The power supply requirement for the EB9035 is +5V for
VCC at a current rating of 170mA (nominally).
PCB DETAILS
The EB9035 is a four layer printed circuit board constructed
of standard FR-4 material and measures approximately 4.5"
by 4.5". Ground and power plane layers are internal to the
board with signal layers on the top and bottom of the board.
Components are mounted both on the top and bottom sides.
The silkscreen (top and bottom) and all four layers are shown
on the following pages. Note the following special artwork
features used to optimize performance:
- A continuous ground plane is provided underneath all high
speed traces avoiding impedance discontinuities and en-
suring maximum signal integrity
- Copper on the power and ground planes has been re-
moved from the area surrounding the center pin of the output
BNC connectors and from underneath the output compo-
nents of the GS9028 cable driver. The purpose of these
cutouts is to reduce the effect of the capacitance added by
the connector and the pads of the components.
- Copper on the power and ground planes has been re-
moved from underneath the loop filter and RVCO compo-
nents of the GS9035. The purpose of these cutouts is to avoid
any noise coupling from the planes into the GS9035.
APPLICATIONS
The EB9035 evaluation board is designed to show the
characteristics of the GS9035 Reclocker and the GS9028
Cable Driver.
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
Please be advised that this preliminary document does not conform to Gennum's ISO9001 standards.
© Copyright March 1998 Gennum Corporation. All rights reserved. Printed in Canada.
VB2931 - 1
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GENNUM [ GENNUM CORPORATION ]
