Utilizing LVDS to Reduce EMI/EMC in Network Cameras
Utilizing LVDS to Reduce EMI/EMC in Network Cameras
Utilizing LVDS to Reduce EMI/EMC in Network Cameras
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80.00<br />
Orig<strong>in</strong>al Board<br />
60.00<br />
Ansoft Corporation Common Noise<br />
<strong>LVDS</strong> with PRBS measurements<br />
VcomIn [mV]<br />
Ansoft Corporation Common Noise<br />
<strong>LVDS</strong> with PRBS measurements with beads<br />
100.00<br />
Curve Inf o<br />
VcomIn<br />
Transient<br />
Ferrite 50.00 Beads+Orig<strong>in</strong>al Board<br />
VcomIn [mV]<br />
Vcom [mV]<br />
40.00<br />
20.00<br />
0.00<br />
-20.00<br />
-40.00<br />
-60.00<br />
-80.00<br />
0.00 50.00 100.00<br />
Time [ns]<br />
150.00 200.00 250.00<br />
0.00<br />
-50.00<br />
10.00<br />
0.00<br />
-10.00<br />
-20.00<br />
-30.00<br />
-40.00<br />
-50.00<br />
-60.00<br />
-70.00<br />
Curve Inf o<br />
VcomIn<br />
Transient<br />
-80.00<br />
0.00 50.00 100.00<br />
Time [ns]<br />
150.00 200.00 250.00<br />
Ansoft Corporation XY Plot 4<br />
<strong>LVDS</strong> with PRBS new system<br />
100.00<br />
Curve Inf o<br />
90.00<br />
V(<strong>in</strong>1)+V(<strong>in</strong>2)<br />
Transient<br />
80.00 CMNF+Modified 70.00 FPC/VIDEO<br />
60.00<br />
V(<strong>in</strong>1)+V(<strong>in</strong>2) [mV]<br />
50.00<br />
40.00<br />
30.00<br />
20.00<br />
10.00<br />
-0.00<br />
-10.00<br />
-20.00<br />
-30.00<br />
-40.00<br />
-50.00<br />
-60.00<br />
-70.00<br />
-80.00<br />
-90.00<br />
-100.00<br />
0.00 50.00 100.00 150.00 200.00 250.00<br />
Time [ns]<br />
Ansoft Corporation Common Noise<br />
<strong>LVDS</strong> with PRBS measurements<br />
100.00<br />
Curve Info<br />
Vcom [mV]<br />
Ansoft Corporation XY Plot 1<br />
<strong>LVDS</strong> with PRBS measurements with beads<br />
100.00<br />
Curve Inf o<br />
Vcom [mV]<br />
80.00<br />
60.00<br />
40.00<br />
20.00<br />
-0.00<br />
-20.00<br />
-40.00<br />
-60.00<br />
-80.00<br />
-100.00<br />
0.00 0.50 1.00<br />
Time [us]<br />
1.50 2.00<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
-2.00<br />
-100.00<br />
-100.00<br />
0.00 50.00 100.00 150.00 200.00 250.00<br />
0.00 50.00 100.00 150.00 200.00<br />
0.00 50.00 100.00 150.00 200.00 250.00<br />
Time [ns]<br />
Time [ns]<br />
Time [ns]<br />
Can achieve Much Quality EYE pattern with<br />
250.00<br />
Ansoft Corporation<br />
80.00<br />
70.00<br />
60.00<br />
50.00<br />
Common Noise<br />
<strong>LVDS</strong> with PRBS new system<br />
Ansoft Corporation Ansoft Corporation Common Noise<br />
Eye<br />
<strong>LVDS</strong> with PRBS new system<br />
Curve Inf o<br />
100.00<br />
2.00<br />
Curve Info<br />
Vcom<br />
90.00<br />
Transient<br />
Vdiff<br />
Transient<br />
1.50<br />
80.00<br />
70.00<br />
1.00<br />
60.00<br />
Lower Common Mode Degeneration!!<br />
<strong>LVDS</strong> with PRBS new system<br />
Curve Info<br />
Vcom<br />
Transient<br />
40.00<br />
50.00<br />
0.50<br />
30.00<br />
40.00<br />
0.00<br />
30.00<br />
20.00<br />
20.00<br />
Modified FPC/VIDEO<br />
Ansoft Corporation Eye<br />
<strong>LVDS</strong> with PRBS measurements<br />
2.00<br />
Curve Inf o<br />
Vdiff [V]<br />
-2.00<br />
0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00<br />
Time [ns]<br />
2.00<br />
Vdiff [V]<br />
Ansoft Corporation Eye<br />
<strong>LVDS</strong> with PRBS measurements with beads<br />
2.00<br />
Curve Inf o<br />
Vdiff [V]<br />
1.50<br />
1.00<br />
0.50<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
-2.00<br />
0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00<br />
Time [ns]<br />
2.00<br />
Vdiff [V]<br />
Vdiff [V]<br />
1.50<br />
1.00<br />
0.50<br />
Vdiff<br />
Transient<br />
-2.00<br />
0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00<br />
Time [ns]<br />
2.00<br />
Vdiff [V]<br />
-0.50<br />
-1.00<br />
-1.50<br />
-2.00<br />
0.00 0.50 1.00 1.50 2.00<br />
Time [us]<br />
Vdiff [V]<br />
1.50<br />
1.00<br />
0.50<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
-2.00<br />
0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00<br />
Time [ns]<br />
2.00<br />
Vdiff [V]<br />
1.50<br />
1.00<br />
0.50<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
1.50<br />
1.00<br />
0.50<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
1.50<br />
1.00<br />
0.50<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
1.50<br />
1.00<br />
0.50<br />
0.00<br />
-0.50<br />
-1.00<br />
-1.50<br />
Vdiff<br />
Transient<br />
-2.00<br />
0.00 0.50 1.00 1.50 2.00<br />
Time [us]<br />
Ansoft Corporation Eye<br />
<strong>LVDS</strong> with PRBS new system<br />
2.00<br />
Curve Inf o<br />
Vdiff<br />
Transient<br />
-2.00<br />
0.00 50.00 100.00 150.00 200.00 250.00<br />
Time [ns]<br />
Vcom [mV]<br />
V(out1)+V(out2) [mV]<br />
50.00<br />
0.00<br />
-50.00<br />
10.00<br />
-0.00<br />
-10.00<br />
-20.00<br />
-30.00<br />
-40.00<br />
-50.00<br />
-60.00<br />
-70.00<br />
-80.00<br />
-90.00<br />
Vcom<br />
Transient<br />
Vcom<br />
Transient<br />
-100.00<br />
0.00 0.50 1.00<br />
Time [us]<br />
1.50 2.00<br />
Ansoft Corporation XY Plot 3<br />
<strong>LVDS</strong> with PRBS new system<br />
100.00<br />
Curve Info<br />
90.00<br />
80.00<br />
70.00<br />
60.00<br />
50.00<br />
40.00<br />
30.00<br />
20.00<br />
10.00<br />
-0.00<br />
-10.00<br />
-20.00<br />
-30.00<br />
-40.00<br />
-50.00<br />
-60.00<br />
-70.00<br />
-80.00<br />
-90.00<br />
V(out1)+V(out2)<br />
Transient<br />
-100.00<br />
0.00 50.00 100.00 150.00 200.00 250.00<br />
Time [ns]
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