Microchip SY89328L Bedienungsanleitung


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August 2004 M9999-080904
hbwhelp@micrel.com or (408) 955-1690
LVTTL-to-Differential LVPECL and
Differential LVPECL-to-LVTTL Translator
SY89328L Evaluation Board
General Description
The SY89328L evaluation board is designed for
convenient setup and quick evaluation of the
SY89328L. The boards are optimized to interface
directly to a 50 oscilloscope.
The default evaluation board I/O configuration is AC-
coupled.
Data Sheets and Support documentation can be
found on Micrel’s website at www.micrel.com.
Features
SY89328L
Single +3.3V power supply
AC-coupled configuration for ease-of-use
I/O interface includes on-board termination
Fully assembled and tested
Related Documentation
SY89328L, 3.3V LVTTL -to-DIFFERENTIAL
LVPECL and Differential LVPECL-to-LVTTL
TRANSLATOR Data Sheet
____________________________________________________________________________________
Evaluation Board
Micrel
SY89328L
August 2004
M9999-080904
hbwhelp@micrel.com or (408) 955-1690
2
Evaluation Board Description
The default configuration for the board is the AC-
coupled configuration.
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 of either 3.3V +10% 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, making it
unnecessary to vary the offset voltage or change any
components on the board as the power supply
voltage varies. 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.
The 450 series resistor in location C5 is to limit the
output current when connected to a scope with a 50
termination to ground. This 450 resistor along with
the 50 scope termination forms a 1:10 voltage
divider that attenuates the voltage that will be seen by
the scope. This 450 resistor is necessary only on
the evaluation board and not in a system. For normal
system use, the output would be connected directly to
the next input.


Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: SY89328L

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