Datasheet

Crosstalk behavior DALC208
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Note: The measurements have been done in the worst case i.e. on two adjacent cells (I/O1 and
I/O4).
3.3 Analog crosstalk
Figure 16. Analog crosstalk measurements
Figure 16 shows the measurement circuit for the analog application. For the usual frequency
range of analog signals (up to 100MHz) the effect on disturbed line is less than -45 dBm.
See Figure 17.
As the DALC208SC6 is designed to protect high speed data lines, it must ensure a good
transmission of operating signals. The attenuation curve give such an information.
Figure 18 shows that the DALC208SC6 is well suitable for data line transmission up to
100 Mbit/s while it works as a filter for undesirable signals such as GSM carrier (900 MHz).
SPECTRUM ANALYSER
Vout
50
Ω
TRACKING GENERATOR
Vg
Vin
50
Ω
TEST BOARD
+5V
DALC
208
C=100nF
Figure 17. Analog crosstalk results Figure 18. DALC208SC6 attenuation
1 10 100 1,000
-100
-80
-60
-40
-20
0
f(MHz)
dBm
1 10 100 1,000
-30
-20
-10
0
f(MHz)
dBm