emif01-10018w5 STMicroelectronics, emif01-10018w5 Datasheet - Page 6

• Manufacturer Part Number: emif01-10018w5
• Description: Filter Including Protection
• Manufacturer: STMicroelectronics

EMIF01-10018W5
CROSSTALK BEHAVIOR
1- Crosstalk phenomena
Fig. A7: Crosstalk phenomena
The crosstalk phenomena are due to the coupling between 2 lines. The coupling factor (
gap across lines decreases, particularly in silicon dice. In the example above the expected signal on load R
fact the real voltage at this point has got an extra value 21V
crosstalk phenomenon of the line 1 on the line 2. This phenomenon has to be taken into account when the drivers impose
fast digital data or high frequency analog signals in the disturbing line. The perturbed line will be more affected if it works
with low voltage signal or high load impedance (few k ). The following chapters give the value of both digital and analog
crosstalk.
2- Digital Crosstalk
Fig. A8: Digital crosstalk measurement
Figure A8 shows the measurement circuit used to quantify the crosstalk effect in a classical digital application.
Figure A9 shows that in such a condition signal from 0 to 5V and rise time of few ns, the impact on the disturbed line is less
than 50mV peak to peak. No data disturbance was noted on the concerned line.The measurements performed with falling
edges gives an impact within the same range.
Fig. A9: Digital crosstalk results
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V
G1
V
G2
Square
Pulse
Generator
5KHz
DRIVERS
R
G1
R
G2
+5V
74HC04
V
21
G1
V
+5V
line 2
line 1
G1
Line 1
Line 2
V
G1
G1
10018W5
EMIF01
. This part of the V
RECEIVERS
R
L2
21
V
G1
+5V
R
L1
74HC04
G1
2
V
signal represents the effect of the
G2
12
+
or
1
21
V
G1
V
21
G1
+
) increases when the
12
V
G2
L2
is 2V
G2
, in