Microchip SY89835U Handleiding


Lees hieronder de đź“– handleiding in het Nederlandse voor Microchip SY89835U (8 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 16 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

Pagina 1/8
Precision/Differential 1:2 LVDS
Fanout Buffer with Internal
Termination
SY89835U Evaluation Board
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2006
M9999-021006-A
hbwhelp@micrel.com or (408) 955-1690
General Description
The SY89835U evaluation board is designed for
convenient setup and quick evaluation of the
SY89835U. The board is optimized to interface directly
to a 50 oscilloscope.Ω
The board is designed in multiple layers for better
performance and simple signal evaluation. For best AC
performance, the board is configured in AC-coupled In
and AC-coupled Out configuration. For applications that
require a DC-coupled configuration, step-by-step
instructions for modifying the board are included.
All data sheets and support documentation can be found
on Micrel’s web site at: .www.micrel.com
Features
• +2.5V power supply
• AC-coupled configuration for ease-of-use
• I/O interface includes on-board termination
• Fully assembled and tested
• Can be reconfigured for DC-coupled operation
Related Documentation
• SY89835U, Precision LVDS 1:2 Fanout Buffer with
Internal Termination and Fail-Safe Inputs
______________________________________________________________________________________________________
Evaluation Board
Micrel, Inc.
SY89835U Evaluation Board
February 2006
M9999-021006-A
hbwhelp@micrel.com or (408) 955-1690
Evaluation Board Description
The default configuration for the SY89835U board is
AC-coupled. The choice between AC-coupled and DC-
coupled configurations offers the user flexibility for
specific applications.
AC-Coupled Evaluation Board
The AC-coupled configuration is suited to most
customer applications and is preferred by the majority of
users because of its ease-of-use. It requires only a
single power supply and offers the most flexibility in
interfacing to a variety of signal sources.
The DC-bias levels and AC-coupling capacitors are
supplied on-board for each input. The user needs only
to supply a minimum input voltage swing and the bias
voltage will automatically adjust the input to the correct
level as the power supply voltage varies.
DC-Coupled Evaluation Board
For applications that are not suited to AC-coupling, such
as clock that can be turned off for extended periods of
time, the board can be user-configured for DC-coupled
operation.
DC-coupled operation can be accomplished by
modifying the board to use two power supplies into a
“split-supply configuration.” In order to correctly interface
LVDS to a 50 (to ground) scope, VΩCC must be VOCM
above the GND level. Therefore, a 2.5V supply will be
split into +1.2V and –1.3V to ensure proper VCC to VEE
voltage difference.
Micrel, Inc.
SY89835U Evaluation Board
February 2006
M9999-021006-A
hbwhelp@micrel.com or (408) 955-1690
Evaluation Board
SY89835U AC-Coupled Evaluation Board
I/O
Power Supply
VCC
GND
VEE
AC-Coupled Input/AC-Coupled Output
2.5V
+2.5V
0V
0V
Table 1. SY89835U AC-Coupled Evaluation Board Power Supply Connections


Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: SY89835U

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