DocID11068 Rev 7 7/13
USBLC6-4 Technical information
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Figure 12. Analog crosstalk measurements
Figure 12. shows the measurement circuit for the analog application. In usual frequency
range of analog signals (up to 240 MHz) the effect on disturbed line is less than -55 dB (see
Figure 13.).
Figure 13. Analog crosstalk results
As the USBLC6-4SC6 is designed to protect high speed data lines, it must ensure a good
transmission of operating signals. The frequency response (Figure 5.) gives attenuation
information and shows that the USBLC6-4SC6 is well suitable for data line transmission up
to 480 Mbit/s while it works as a filter for undesirable signals like GSM (900 MHz)
frequencies, for instance.
NETWORK ANALYSER
PORT 2
NETWORK ANALYSER
PORT 1
TEST BOARD
V
bus
USBLC6-4SC6
100.0k 1.0M 10.0M 100.0M 1.0G
- 120.00
- 90.00
- 60.00
- 30.00
0.00
dB
f/Hz
100.0k 1.0M 10.0M 100.0M 1.0G
- 120.00
- 90.00
- 60.00
- 30.00
0.00
dB
F (Hz)
