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SY88943V Datasheet(PDF) 4 Page - Micrel Semiconductor

Part No. SY88943V
Description  5V/3.3V 2.5Gbps LIMITING POST AMPLIFIER WITH SIGNAL DETECT
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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SY88943V Datasheet(HTML) 4 Page - Micrel Semiconductor

   
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4
SY88943V
Micrel
PRODUCT ORDERING CODE
Ordering
Package
Operating
Code
Type
Range
SY88943VKC
K10-1
Commercial
SY88943VKCTR
K10-1
Commercial
Output Termination
The SY88943V outputs must be terminated with a 50
load to V
CC –2V (or Thevenin equivalent).
Layout and PCB Design
Since the SY88943V is a high-frequency component,
performance can be largely determined by the board layout
and design. A common problem with high-gain amplifiers is
the feedback from the large swing outputs to the input via
the power supply.
DESIGN PROCEDURE
The SY88943V ground pin should be connected to the
circuit board ground. Use multiple PCB vias close to the
part to connect to ground. Avoid long, inductive runs which
can degrade performance.
R2
× 1.32V
R1 + R2
NOTES:
SD
LVL = VCC
-1.32V +
R1 + R2
≥ 2.6kΩ
R1
R2
SDLVL
VREF
VCC
Figure 3. SD
LVL Circuit
DIN–
50
50
0.1
µF
0.1
µF
0.1
µF
DIN+
VREF
Figure 2. Differential Input Configuration


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