Micrel
SY88993AV
APPLICATION NOTE
VCC
Output Termination
VCC
The SY88993AV outputs must be terminated with a 50Ω
load to VCC.
50Ω
50Ω
50Ω
50Ω
Z0 = 50Ω
Layout and PCB Design
DOUT
Since the SY88993AV is a high-frequency component,
performance can largely be determined by board layout
and design. A common problem with high-gain amplifiers is
feedback from the large swing outputs to the input via power
supply.
/DOUT
Z0 = 50Ω
The SY88993AV 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.
16mA
VCC
ESD STRUCTURE
GND
ESD STRUCTURE
Figure 2. Differential Output Configuration
22nF
22nF
DIN
VCC
/DIN
R1
LOSLVL
VREF
R2
0.1µF
GND
VREF
Figure 1. Differential Input Configuration
NOTES:
1. Resistor Divider = R2/ (R1 + R2)
2. R1 + R2 ≥ 5kΩ
Figure 3. LOSLVL Circuit
PRODUCT ORDERING CODE
Ordering
Code
Package
Type
Operating
Range
SY88993AVKC
K10-1
Commercial
6
MICREL [ MICREL SEMICONDUCTOR ]
