Microchip SY89321L Bedienungsanleitung
Microchip
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SY89321L
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August 2004 M9999-081304
hbwhelp@micrel.com or (408) 955-1690
Differential LVPECL-to-LVTTL
Translator
SY89321L Evaluation Board
General Description
The SY89321L evaluation board is designed for
convenient setup and quick evaluation of the
SY89321L. The boards are optimized to interface
directly to a 50Ω oscilloscope.
The default evaluation board I/O configuration is AC-
coupled.
Data sheets and support documentation can be found
on Micrel’s web site at www.micrel.com.
Features
• SY89321L
• Single +3.3V power supply
• AC-coupled configuration for ease-of-use
• I/O interface includes on-board terminations
• Fully assembled and tested
Related Documentation
• SY89321L, 3.3V Differential LVPECL-to-LVTTL
Translator Data Sheet
____________________________________________________________________________________
Evaluation Board
Micrel
SY89321L Evaluation Board
August 2004 M9999-081304
hbwhelp@micrel.com or (408) 955-1690
2
Evaluation Board Description
The default configuration for the boards is AC-
coupled inputs and AC-coupled outputs.
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 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 450Ω series resistor in location C3 is to limit the
output current when connected to a scope with a 50Ω
termination to ground. This 450Ω resistor along with
the 50Ω scope termination forms a 1:10 voltage
divider that attenuates the voltage that will be seen by
the scope. This 450Ω 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: | SY89321L |
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