Microchip SY89316V Handleiding
Microchip
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SY89316V
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August 2004 M9999-081304
hbwhelp@micrel.com or (408) 955-1690
PECL/ECL Differential Receiver/Buffer
SY89206/216V Evaluation Board
SY89306/316V Evaluation Board
General Description
The SY89206V, SY89216V, SY89306V and
SY89316V evaluation boards are designed for
convenient setup and quick evaluation of the
respective devices. The boards are optimized to
interface directly to a 50 oscilloscope.Ω
The default evaluation board I/O configuration is AC-
Coupled. For applications that require a DC-Coupled
configuration, step-by-step instructions for modifying
the board are included.
Data sheets and support documentation can be
found on Micrel’s web site at .www.micrel.com
Features
• SY89206V and SY89216V
• SY89306V and SY89316V
• Single +3.3V or +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
• SY89206V/216V, 3.3V/5V 1GHz Differential
PECL/ECL Receiver/Buffer Data Sheet
• SY89306V/316V, 3.3V/5V 2.5GHz Differential
PECL/ECL Receiver/Buffer Data Sheet
____________________________________________________________________________________
Evaluation Board
Micrel Y89206/216/306/316V Evaluation Board S
August 2004 M9999-081304
hbwhelp@micrel.com or (408) 955-1690
2
Evaluation Board Description
The SY89206V, SY89216V, SY89306V and
SY89316V share a common evaluation board. The
individual evaluation boards are labeled to identify the
specific device and the configuration, either AC- or
DC-coupled configuration, for that board.
The default configuration for these boards is the AC-
Coupled configuration. The choice between two
configurations offers the user flexibility in selecting the
board that is right for his particular application.
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% or 5.0V
+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.
DC-Coupled Evaluation Board
For DC-coupled operation, the board can be modified
to use two power supplies in a "split-supply
configuration." The term split-supply simply means
the +3.3V supply is split into a +2V and –1.3V, or for a
+5V supply it is split into a +2V and –3V power supply
configuration. This effectively offsets the board by
+2V. The +2V offset in this two-power supply
configuration then provides the correct terminations
for the device by setting the Ground potential on the
board to be exactly 2 volts below the V
CC
supply. The
V
EE
voltage is then set to –1.3V for 3.3V devices or
–3.0V for 5V devices so the device power pins still
see a full 3.3V or 5V potential between V
CC
and V
EE
.
Step-by-step instructions for modifying an AC-coupled
evaluation board for DC-coupled operation can be
found in “Modifying your AC-Coupled Board for DC-
Coupled Operation” section.
Micrel Y89206/216/306/316V Evaluation Board S
August 2004 M9999-081304
hbwhelp@micrel.com or (408) 955-1690
3
Evaluation Board
AC-Coupled Evaluation Board
I/O
Power Supply
V
CC
GND
V
EE
AC-Coupled Input/AC-Coupled Output
3.3V System
+2V
0V
0V
AC-Coupled Input/AC-Coupled Output
5V System
+2V
0V
0V
Table 1. AC-Coupled Evaluation Board Power Supply Connections
R1
50Ω
1
2
3
4
8
7
6
5
NC
D
/D
V
BB
V
CC
Q
/Q
V
EE
R2
50Ω
R3
180Ω
R4
180Ω
V
CC
= 3.3V/5.0V
GND = 0V
SMA2
SMA7
SMA6
SMA3
C1
C2
C3
C4
Product specificaties
| Merk: | Microchip |
| Categorie: | Niet gecategoriseerd |
| Model: | SY89316V |
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