SFC2280-10.WCT Semtech, SFC2280-10.WCT Datasheet - Page 6

• Manufacturer Part Number: SFC2280-10.WCT
• Manufacturer: Semtech
• Type: EMI Filterr

Specifications of SFC2280-10.WCT

• Mounting Style: Surface Mount
• Termination: Flat Style
• Operating Temp Range: -55C to 125C
• Product Height (mm): 0.5mm
• Lead Free Status / RoHS Status: Compliant

SFC2280-10
PRELIMINARY
PROTECTION PRODUCTS
Applications Information
Insertion Loss
The insertion loss of the device is the ratio of the
power delivered to the load with and without the filter
in the circuit. This parameter is dependent upon the
impedance of the source and the load. The standard
impedance of test equipment that is used to measure
filter frequency response is 50
In order to obtain an
accurate measurement of the filter performance, an
evaluation board with 50
transmission lines is used.
The evaluation board for the SFC2280-10 is shown in
Figure 1. The board is specifically designed for fre-
quency response analysis. The evaluation board
contains SMA connectors at each of the circuits inputs
and outputs. The connections are made with 50
traces. An HP 8753E network analyzer with an internal
spectrum analyzer and tracking generator is used. This
equipment has the capability to sweep the device from
3kHz to 3GHz. The analyzer’s source (R
) impedance
S
is equal to the load (R
) impedance which is equal to
Figure 1 - SFC2280-10 Evaluation Board
L
50
Pins A1, A3, B1, and B3 of the device are connected
to SMA connectors via the 50 ohm traces. Pins A1
and A3 are the data line inputs and pins B1 and B3
are the outputs. Pin A2 is connected to the test point
marked V
. Pin B2 is connected to GND. Since pin A2
CC
and B2 are connected internally within the device, a
V
connection is not necessary.
CC
A typical insertion loss characteristic is shown in Figure
2. As shown, the device has very low insertion loss in
the pass band (to approximately 10MHz) and good
attenuation at high frequencies (approximately
100MHz to 3GHz).
Figure 2 - Typical Insertion Loss S21
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2005 Semtech Corp.
6